Common Weakness Enumeration
CWE-122
AllowedHeap-based Buffer Overflow
Abstraction: Variant · Status: Draft
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
4115 vulnerabilities reference this CWE, most recent first.
CVE-2026-11610 (GCVE-0-2026-11610)
Vulnerability from cvelistv5 – Published: 2026-07-07 09:17 – Updated: 2026-07-08 21:02
VLAI
EPSS
VEX
Title
389-ds-base: 389-ds-base: heap buffer overflow in sasl_io_recv() via padded sasl unbind
Summary
A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server
(389-ds-base). After a successful SASL bind with integrity protection (SSF > 0),
an authenticated attacker can send a specially crafted oversized LDAP UNBIND packet
that is copied into a 512-byte heap receive buffer without a bounds check in
sasl_io_recv() in sasl_io.c. This allows up to approximately 2 megabytes of
attacker-controlled data to overflow the buffer, causing a denial of service (server
crash). In FreeIPA and Red Hat Identity Management deployments, any domain user with
a valid Kerberos ticket, any enrolled host, or any service account can trigger this
vulnerability over the network after authenticating via GSSAPI.
The vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and
was not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow
in schema.c only.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
19 references
Impacted products
24 products
| Vendor | Product | Version | |
|---|---|---|---|
| 389ds | 389-ds-base |
Affected:
1.3.2 , ≤ 3.3.0
(semver)
|
|
| Red Hat | Red Hat Directory Server 11.5 E4S for RHEL 8 |
Unaffected:
8060020260702180044.0ca98e7e , < *
(rpm)
cpe:/a:redhat:directory_server_e4s:11.5::el8 |
|
| Red Hat | Red Hat Directory Server 11.7 E4S for RHEL 8 |
Unaffected:
8080020260702180836.f969626e , < *
(rpm)
cpe:/a:redhat:directory_server_e4s:11.7::el8 |
|
| Red Hat | Red Hat Directory Server 11.9 for RHEL 8 |
Unaffected:
8100020260702145313.37ed7c03 , < *
(rpm)
cpe:/a:redhat:directory_server:11.9::el8 |
|
| Red Hat | Red Hat Directory Server 12.2 E4S for RHEL 9 |
Unaffected:
9020020260703060155.1674d574 , < *
(rpm)
cpe:/a:redhat:directory_server_e4s:12.2::el9 |
|
| Red Hat | Red Hat Directory Server 12.4 E4S for RHEL 9 |
Unaffected:
9040020260703055735.1674d574 , < *
(rpm)
cpe:/a:redhat:directory_server_e4s:12.4::el9 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:3.2.0-8.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:3.0.6-19.el10_0 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:1.3.11.1-13.el7_9 , < *
(rpm)
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260626120929.25e700aa , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::appstream |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
8040020260629123121.96015a92 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4::appstream cpe:/a:redhat:rhel_eus_long_life:8.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
8040020260629123121.96015a92 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4::appstream cpe:/a:redhat:rhel_eus_long_life:8.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
8060020260626130540.824efc52 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
8060020260626130540.824efc52 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
8080020260630025241.6dbb3803 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
8080020260630025241.6dbb3803 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:2.8.0-8.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:2.2.4-19.el9_2 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:2.4.5-26.el9_4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:2.6.1-22.el9_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6::appstream cpe:/a:redhat:rhel_eus:9.6::crb |
|
| Red Hat | Red Hat Directory Server 13.2 |
Unaffected:
1783452100 , < *
(rpm)
cpe:/a:redhat:directory_server:13.2::el10 |
|
| Red Hat | Red Hat Directory Server 12 |
cpe:/a:redhat:directory_server:12 |
|
| Red Hat | Red Hat Directory Server 13 |
cpe:/a:redhat:directory_server:13 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
Date Public
2026-07-07 09:00
Credits
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CVE-2026-11604 (GCVE-0-2026-11604)
Vulnerability from cvelistv5 – Published: 2026-06-10 21:04 – Updated: 2026-06-11 13:27
VLAI
EPSS
VEX
Summary
An incorrect buffer size calculation in the epoch key generator in OpenVPN ovpn-dco-win version 2.0.0 through 2.8.3 allows a remote authenticated peer to trigger a heap-based buffer overflow and kernel memory corruption via a crafted data packet, resulting in a system crash (denial of service).
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/OpenVPN/ovpn-dco-win/releases | product |
| https://community.openvpn.net/Security%20Announce… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | ovpn-dco-win |
Affected:
2.0.0 , ≤ 2.5.8
(semver)
|
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CVE-2026-10231 (GCVE-0-2026-10231)
Vulnerability from cvelistv5 – Published: 2026-06-01 06:15 – Updated: 2026-06-01 11:18
VLAI
EPSS
VEX
Title
Assimp Half-Life 1 MDL Loader HL1MDLLoader.cpp extract_anim_value heap-based overflow
Summary
A security flaw has been discovered in Assimp up to 6.0.4. Affected is the function HL1MDLLoader::extract_anim_value of the file HL1MDLLoader.cpp of the component Half-Life 1 MDL Loader. Performing a manipulation of the argument num.total results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The project tagged the reported issue as bug.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/367510 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/367510/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-10231 | third-party-advisory |
| https://vuldb.com/submit/821191 | third-party-advisory |
| https://github.com/assimp/assimp/issues/6616 | issue-tracking |
| https://github.com/user-attachments/files/2719574… | exploit |
| https://github.com/assimp/assimp/ | product |
Impacted products
Credits
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CVE-2026-10230 (GCVE-0-2026-10230)
Vulnerability from cvelistv5 – Published: 2026-06-01 06:00 – Updated: 2026-06-01 15:23
VLAI
EPSS
VEX
Title
Assimp Half-Life 1 MDL Loader HL1MDLLoader.cpp read_animations heap-based overflow
Summary
A vulnerability was identified in Assimp up to 6.0.4. This impacts the function Assimp::MDL::HalfLife::HL1MDLLoader::read_animations of the file HL1MDLLoader.cpp of the component Half-Life 1 MDL Loader. Such manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit is publicly available and might be used. The project tagged the reported issue as bug.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/367509 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/367509/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-10230 | third-party-advisory |
| https://vuldb.com/submit/821190 | third-party-advisory |
| https://github.com/assimp/assimp/issues/6615 | exploitissue-tracking |
| https://github.com/assimp/assimp/ | product |
Impacted products
Credits
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CVE-2026-10229 (GCVE-0-2026-10229)
Vulnerability from cvelistv5 – Published: 2026-06-01 05:45 – Updated: 2026-06-01 14:54
VLAI
EPSS
VEX
Title
Assimp Half-Life 1 MDL Loader HL1MDLLoader.cpp read_meshes heap-based overflow
Summary
A vulnerability was determined in Assimp up to 6.0.4. This affects the function HL1MDLLoader::read_meshes of the file HL1MDLLoader.cpp of the component Half-Life 1 MDL Loader. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. The project tagged the reported issue as bug.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/367508 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/367508/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-10229 | third-party-advisory |
| https://vuldb.com/submit/821189 | third-party-advisory |
| https://github.com/assimp/assimp/issues/6614 | issue-tracking |
| https://github.com/user-attachments/files/2719436… | exploit |
| https://github.com/assimp/assimp/ | product |
Impacted products
Credits
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CVE-2026-10200 (GCVE-0-2026-10200)
Vulnerability from cvelistv5 – Published: 2026-05-31 22:45 – Updated: 2026-06-01 12:26
VLAI
EPSS
VEX
Title
Assimp 4x4 Matrix glTFCommon.h CopyValue heap-based overflow
Summary
A vulnerability was found in Assimp up to 6.0.4. This affects the function glTFCommon::CopyValue in the library glTFCommon.h of the component 4x4 Matrix Parser. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been made public and could be used. The project tagged the reported issue as bug.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/367480 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/367480/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-10200 | third-party-advisory |
| https://vuldb.com/submit/821180 | third-party-advisory |
| https://github.com/assimp/assimp/issues/6612 | issue-tracking |
| https://github.com/user-attachments/files/2719425… | exploit |
| https://github.com/assimp/assimp/ | product |
Impacted products
Credits
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CVE-2026-10194 (GCVE-0-2026-10194)
Vulnerability from cvelistv5 – Published: 2026-05-31 16:30 – Updated: 2026-06-03 18:02
VLAI
EPSS
VEX
Title
OFFIS DCMTK dcmqrscp dcmqrdbi.cc deleteOldestImages heap-based overflow
Summary
A weakness has been identified in OFFIS DCMTK 3.7.0. This affects the function DcmQueryRetrieveIndexDatabaseHandle::deleteOldestImages of the file dcmqrdb/libsrc/dcmqrdbi.cc of the component dcmqrscp. Executing a manipulation can lead to heap-based buffer overflow. The attack may be launched remotely. This patch is called 0f78a4ef6f645ea5530166e445e5436a5de58e75. A patch should be applied to remediate this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/367475 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/367475/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-10194 | third-party-advisory |
| https://vuldb.com/submit/821029 | third-party-advisory |
| https://git.dcmtk.org/?p=dcmtk.git;a=commit;h=0f7… | broken-linkpatch |
Impacted products
Credits
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CVE-2026-9605 (GCVE-0-2026-9605)
Vulnerability from cvelistv5 – Published: 2026-05-26 23:15 – Updated: 2026-05-28 13:52 X_Open Source
VLAI
EPSS
VEX
Title
GNU libredwg Dwgbmp Utility bits.c bit_read_RC heap-based overflow
Summary
A flaw has been found in GNU libredwg up to 0.13.4.8160. This issue affects the function bit_read_RC of the file bits.c of the component Dwgbmp Utility. This manipulation causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: 8f03865f37f5d4ffd616fef802acc980be54d300. Applying a patch is the recommended action to fix this issue.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/365678 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/365678/cti | signaturepermissions-required |
| https://vuldb.com/submit/818197 | third-party-advisory |
| https://github.com/LibreDWG/libredwg/issues/1248 | issue-tracking |
| https://github.com/HackC0der/CVE-Repos/blob/main/… | exploit |
| https://github.com/LibreDWG/libredwg/commit/8f038… | patch |
| https://www.gnu.org/ | broken-linkproduct |
Impacted products
Credits
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CVE-2026-9541 (GCVE-0-2026-9541)
Vulnerability from cvelistv5 – Published: 2026-05-26 11:45 – Updated: 2026-05-26 15:18
VLAI
EPSS
VEX
Title
Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow
Summary
A security flaw has been discovered in Squirrel up to 3.2. Impacted is the function ReadObject of the file squirrel/sqobject.cpp of the component Cnut File Handler. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/365602 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/365602/cti | signaturepermissions-required |
| https://vuldb.com/submit/814826 | third-party-advisory |
| https://github.com/albertodemichelis/squirrel/iss… | issue-tracking |
| https://github.com/biniamf/pocs/tree/main/squirre… | exploit |
Impacted products
Credits
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CVE-2026-9502 (GCVE-0-2026-9502)
Vulnerability from cvelistv5 – Published: 2026-05-25 20:45 – Updated: 2026-05-26 12:37 X_Open Source
VLAI
EPSS
VEX
Title
GNU LibreDWG Dwgread Utility decode.c decompress_R2004_section heap-based overflow
Summary
A vulnerability was identified in GNU LibreDWG up to 0.14. This affects the function decompress_R2004_section of the file src/decode.c of the component Dwgread Utility. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit is publicly available and might be used. The identifier of the patch is e501cb9926c1e9a07a0d1cc997f3e69e9be801c9. To fix this issue, it is recommended to deploy a patch.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/365484 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/365484/cti | signaturepermissions-required |
| https://vuldb.com/submit/814259 | third-party-advisory |
| https://github.com/LibreDWG/libredwg/issues/1243 | issue-tracking |
| https://github.com/HackC0der/CVE-Repos/blob/main/… | exploit |
| https://github.com/LibreDWG/libredwg/commit/e501c… | patch |
| https://www.gnu.org/ | product |
Impacted products
Credits
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},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation MIT-10
Operation
Build and Compilation
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-11
Operation
Build and Compilation
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
Operation
Use OS-level preventative functionality. This is not a complete solution, but it provides some defense in depth.
CAPEC-92: Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.