Common Weakness Enumeration

CWE-415

Weakness Allowed

Double Free

Abstraction: Variant · Status: Draft

API response cwe.mitre.org

The product calls free() twice on the same memory address.

Mapping guidance

This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.

Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Relationships and members
ChildOf: CWE-825 · View CWE-1000
ChildOf: CWE-1341 · View CWE-1000
ChildOf: CWE-672 · View CWE-1003
ChildOf: CWE-672 · View CWE-1305
ChildOf: CWE-672 · View CWE-1340
ChildOf: CWE-666 · View CWE-1000
PeerOf: CWE-416 (symmetric) · View CWE-1000
PeerOf: CWE-123 (symmetric) · View CWE-1000
Modes of introduction
Implementation
Detection methods

Fuzzing

Fuzz testing (fuzzing) is a powerful technique for generating large numbers of diverse inputs - either randomly or algorithmically - and dynamically invoking the code with those inputs. Even with random inputs, it is often capable of generating unexpected results such as crashes, memory corruption, or resource consumption. Fuzzing effectively produces repeatable test cases that clearly indicate bugs, which helps developers to diagnose the issues.

Effectiveness: High

Automated Static Analysis

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)

Effectiveness: High

Automated Dynamic Analysis

Use tools that are integrated during compilation to insert runtime error-checking mechanisms related to memory safety errors, such as AddressSanitizer (ASan) for C/C++ [REF-1518].

Effectiveness: Moderate

Crafted inputs are necessary to reach the code containing the error, such as generated by fuzzers. Also, these tools may reduce performance, and they only report the error condition - not the original mistake that led to the error.

Notes

Relationship

This is usually resultant from another weakness, such as an unhandled error or race condition between threads. It could also be primary to weaknesses such as buffer overflows.

Theoretical

It could be argued that Double Free would be most appropriately located as a child of "Use after Free", but "Use" and "Release" are considered to be distinct operations within vulnerability theory, therefore this is more accurately "Release of a Resource after Expiration or Release", which doesn't exist yet.

Content history
Submission: PLOVER · 2006-07-19 · CWE Draft 3
Modification: Eric Dalci · Cigital · 2008-07-01 · CWE 1.0

updated Potential_Mitigations, Time_of_Introduction

Modification: · KDM Analytics · 2008-08-01 · CWE 1.0

added/updated white box definitions

Modification: CWE Content Team · MITRE · 2008-09-08 · CWE 1.0

updated Applicable_Platforms, Common_Consequences, Description, Maintenance_Notes, Relationships, Other_Notes, Relationship_Notes, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2008-11-24 · CWE 1.1

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2009-05-27 · CWE 1.4

updated Demonstrative_Examples

Modification: CWE Content Team · MITRE · 2009-10-29 · CWE 1.6

updated Other_Notes

Modification: CWE Content Team · MITRE · 2010-09-27 · CWE 1.10

updated Relationships

Modification: CWE Content Team · MITRE · 2010-12-13 · CWE 1.11

updated Observed_Examples, Relationships

Modification: CWE Content Team · MITRE · 2011-06-01 · CWE 1.13

updated Common_Consequences

Modification: CWE Content Team · MITRE · 2011-09-13 · CWE 2.1

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2012-05-11 · CWE 2.2

updated References, Relationships

Modification: CWE Content Team · MITRE · 2014-07-30 · CWE 2.8

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2015-12-07 · CWE 2.9

updated Relationships

Modification: CWE Content Team · MITRE · 2017-11-08 · CWE 3.0

updated Likelihood_of_Exploit, Relationships, Taxonomy_Mappings, White_Box_Definitions

Modification: CWE Content Team · MITRE · 2019-01-03 · CWE 3.2

updated Relationships

Modification: CWE Content Team · MITRE · 2019-06-20 · CWE 3.3

updated Relationships

Modification: CWE Content Team · MITRE · 2020-02-24 · CWE 4.0

updated References, Relationships

Modification: CWE Content Team · MITRE · 2020-06-25 · CWE 4.1

updated Common_Consequences

Modification: CWE Content Team · MITRE · 2020-08-20 · CWE 4.2

updated Relationships

Modification: CWE Content Team · MITRE · 2020-12-10 · CWE 4.3

updated Relationships

Modification: CWE Content Team · MITRE · 2021-03-15 · CWE 4.4

updated Maintenance_Notes, Theoretical_Notes

Modification: CWE Content Team · MITRE · 2021-10-28 · CWE 4.6

updated Relationships

Modification: CWE Content Team · MITRE · 2022-04-28 · CWE 4.7

updated Demonstrative_Examples, Observed_Examples

Modification: CWE Content Team · MITRE · 2023-04-27 · CWE 4.11

updated Detection_Factors, Relationships, Time_of_Introduction

Modification: CWE Content Team · MITRE · 2023-06-29 · CWE 4.12

updated Mapping_Notes

Modification: CWE Content Team · MITRE · 2025-04-03 · CWE 4.17

updated Common_Consequences, Description, Diagram

Modification: CWE Content Team · MITRE · 2025-09-09 · CWE 4.18

updated Functional_Areas

Modification: CWE Content Team · MITRE · 2025-12-11 · CWE 4.19

updated Applicable_Platforms, Detection_Factors, References, Weakness_Ordinalities

Modification: CWE Content Team · MITRE · 2026-10-28 · CWE 5.0

updated References

1205 vulnerabilities reference this CWE, most recent first.

CVE-2026-121956 (GCVE-0-2026-121956)

Vulnerability from cvelistv5 – Published: 2026-11-04 15:33 – Updated: 2026-11-04 18:30
VLAI
Title
FreeRDP before 3.32.2 Double Free in WinPR Kerberos retrieveSomeTgt
Summary
FreeRDP before 3.32.2 contains a double free in the WinPR Kerberos SSPI retrieveSomeTgt function, which installs the krb5 default realm into a target principal that has an empty realm without taking ownership of it. Unauthenticated remote clients can send a crafted NLA/CredSSP u2u TGT request whose server-name component contains '@' to corrupt the heap and crash the server process.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 18:30 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: 0 , < 3.32.2 (semver)
Unaffected: 3.32.2 (semver)
    cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-20 00:00
Credits
smaeljaish771 KeenSecurityLab
Show details on NVD website
To clipboard 

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CVE-2026-121507 (GCVE-0-2026-121507)

Vulnerability from cvelistv5 – Published: 2026-11-03 14:17 – Updated: 2026-11-03 15:29
VLAI
Title
Double Free in µD3TN
Summary
Double Free in µD3TN BPv6 Fragmenter Block Duplication allows Unauthenticated Remote Attacker to Cause DoS on Allocation Failure
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 15:15 UTC
CWE
Assigner
GitLab CNA under the mitre root
CNA scorecard B 75/100 over 304 records in the last 180 days details
References
Impacted products
Vendor Product Version
D3TN GmbH µD3TN Affected: 0 , < 0.15.2 (semver)
Create a notification for this product.
Credits
riccardo.nannini@anvilsecure.com
Show details on NVD website
To clipboard 

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CVE-2026-119338 (GCVE-0-2026-119338)

Vulnerability from cvelistv5 – Published: 2026-10-30 20:12 – Updated: 2026-11-05 02:41
VLAI
Title
Tesseract: Double free and use after free in the PAGE XML renderer on right-to-left pages
Summary
Tesseract is an open source OCR engine. From 5.4.0 until 5.5.4, AppendLinePolygon in src/api/pagerenderer.cpp destroys the caller-owned right-to-left Pta accumulator while receiving it by value, leaving line_top_rtl_pts and line_bottom_rtl_pts dangling. On an upright Hebrew or Arabic page at the default PAGE XML level, POLYGONFLAG with a false skewed_flag enters the vulnerable calls, while LEVELFLAG greater than zero provides an alternative gate. The calls repeatedly read and free the stale object, causing a double free and use after free and allowing corrupted coordinates to reach RecalcPolygonline. This issue is fixed in version 5.5.4.
Severity
6.9 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 02:40 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7895 records in the last 180 days details
References
Impacted products
Vendor Product Version
tesseract-ocr tesseract Affected: >= 5.4.0, < 5.5.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-119116 (GCVE-0-2026-119116)

Vulnerability from cvelistv5 – Published: 2026-10-30 16:10 – Updated: 2026-10-30 20:00
VLAI
Title
Use-after-free in the SetClient command handler of kmstool-enclave in AWS aws-nitro-enclaves-sdk-c
Summary
A use-after-free and double-free issue in the SetClient command handler of the kmstool-enclave sample application of AWS aws-nitro-enclaves-sdk-c before 0.4.6 may allow an application that runs on the parent EC2 instance to corrupt heap memory inside a Nitro Enclave which may lead to arbitrary code execution within the enclave. To remediate this issue, users should rebuild any enclave image that includes kmstool-enclave, or code derived from it, against aws-nitro-enclaves-sdk-c 0.4.6.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
8.7 (High)
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 19:21 UTC
CWE
Assigner
AMZN CNA under the mitre root
CNA scorecard A 94/100 over 157 records in the last 180 days details
References
Impacted products
Vendor Product Version
AWS kmstool-enclave Affected: 0 , < 0.4.6 (custom)
    cpe:2.3:a:aws:kmstool-enclave:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-116743 (GCVE-0-2026-116743)

Vulnerability from cvelistv5 – Published: 2026-10-26 21:52 – Updated: 2026-11-05 15:42
VLAI
Title
libyal libmsiecf through 20260525 Double Free via libmsiecf_url_values_read_data
Summary
libyal libmsiecf through 20260525 contains a double free vulnerability in libmsiecf_url_values_read_data() that allows attackers to corrupt heap memory via crafted partial URL records. Attackers can supply a crafted MSIE cache index.dat file whose recovered partial record has an oversized unknown_offset, crashing forensic tools processing it.
Severity
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 15:41 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
libyal libmsiecf Affected: 0 , ≤ 20260525 (custom)
Create a notification for this product.
Date Public
2026-10-22 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology
Show details on NVD website
To clipboard 

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CVE-2026-116260 (GCVE-0-2026-116260)

Vulnerability from cvelistv5 – Published: 2026-10-26 11:15 – Updated: 2026-10-31 01:14
VLAI
Title
libimobiledevice AFC Service afc.c service_receive double free
Summary
A weakness has been identified in libimobiledevice up to 1.4.0. This issue affects the function service_receive of the file src/afc.c of the component AFC Service. Executing a manipulation can lead to double free. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-31 01:14 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 83/100 over 3801 records in the last 180 days details
References
URL Tags
https://vuldb.com/vuln/426299 vdb-entrytechnical-description
https://vuldb.com/vuln/426299/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-116260 third-party-advisory
https://vuldb.com/submit/1009969 third-party-advisory
https://bohmid-com.vercel.app/#/article/blog-afc-… exploit
Impacted products
Vendor Product Version
n/a libimobiledevice Affected: 1.0
Affected: 1.1
Affected: 1.2
Affected: 1.3
Affected: 1.4.0
    cpe:2.3:a:libimobiledevice:libimobiledevice:*:*:*:*:*:*:*:*
Credits
ahmed0000 (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-112036 (GCVE-0-2026-112036)

Vulnerability from cvelistv5 – Published: 2026-10-19 00:45 – Updated: 2026-10-19 16:37
VLAI
Title
Artifex MuPDF Signature Locking pdf-xref.c free_char_list double free
Summary
A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
4.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 15:46 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 83/100 over 3801 records in the last 180 days details
References
Impacted products
Vendor Product Version
Artifex MuPDF Affected: 1.28.0
Affected: 1.28.1
Affected: 1.28.2
Affected: 1.28.3
Affected: 1.28.4
Affected: 1.28.5
    cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
suyuanwang (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-110599 (GCVE-0-2026-110599)

Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-14 16:16
VLAI
Title
L-SMASH through 2.14.5 Double Free in HEVC and H.264 Importer Probe
Summary
L-SMASH through 2.14.5 contains a double free vulnerability in hevc_setup_first_summary() and h264_setup_first_summary() in importer/nalu_imp.c that frees borrowed codec-specific objects on error paths. Attackers can supply a crafted Annex-B elementary stream lacking a parseable SPS to lsmash_read_file() or the boxdumper, remuxer, or muxer tools, causing use-after-free, heap corruption, and crashes.
Severity
6.9 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 16:16 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
l-smash l-smash Affected: 0 , ≤ 2.14.5 (semver)
Create a notification for this product.
Date Public
2026-10-14 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology
Show details on NVD website
To clipboard 

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CVE-2026-109943 (GCVE-0-2026-109943)

Vulnerability from cvelistv5 – Published: 2026-10-13 13:27 – Updated: 2026-10-14 14:05
VLAI
Title
FreeRDP 3.29.0 before 3.32.0 Double Free via Async-Update Polygon Order
Summary
FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's async-update message proxy, which shallow-copies the parser-owned PolygonSC or PolygonCB points array when numPoints is zero, so both the queue consumer and parser cleanup free it. A malicious RDP server can send a point-bearing polygon order followed by a zero-point order to crash a client with +async-update enabled.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 14:04 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: 3.29.0 , < 3.32.0 (semver)
Unaffected: 3.32.0 (semver)
    cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-29 00:00
Credits
Kushalkhemka opensec-intelligence mayank-jangid-moon skigeek16
Show details on NVD website
To clipboard 

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CVE-2026-109271 (GCVE-0-2026-109271)

Vulnerability from cvelistv5 – Published: 2026-10-12 16:04 – Updated: 2026-10-18 11:53
VLAI
Title
ImageMagick 7.1.2-30 before 7.1.2-32 Use After Free in WBINFO Decoder
Summary
ImageMagick 7.1.2-30 before 7.1.2-32 contains a use after free vulnerability in the WBINFO decoder that occurs when a memory allocation fails during image decoding. Attackers can supply a crafted image that, when decoded under memory allocation failure conditions, causes freed memory to be reused, crashing the application.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-18 11:39 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: 7.1.2-30 , < 7.1.2-32 (custom)
Unaffected: 7.1.2-32 (custom)
    cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-27 00:00
Credits
Yanhaoxi
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design

Choose a language that provides automatic memory management.

Mitigation
Implementation

Ensure that each allocation is freed only once. After freeing a chunk, set the pointer to NULL to ensure the pointer cannot be freed again. In complicated error conditions, be sure that clean-up routines respect the state of allocation properly. If the language is object oriented, ensure that object destructors delete each chunk of memory only once.

Mitigation
Implementation

Use a static analysis tool to find double free instances.

No CAPEC attack patterns related to this CWE.

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