Common Weakness Enumeration
CWE-787
Allowed-with-ReviewOut-of-bounds Write
Abstraction: Base · Status: Draft
The product writes data past the end, or before the beginning, of the intended buffer.
15096 vulnerabilities reference this CWE, most recent first.
CVE-2026-5187 (GCVE-0-2026-5187)
Vulnerability from cvelistv5 – Published: 2026-04-09 19:45 – Updated: 2026-04-14 14:04
VLAI
EPSS
VEX
Title
Heap Out-of-Bounds Write in DecodeObjectId() in wolfSSL
Summary
Two potential heap out-of-bounds write locations existed in DecodeObjectId() in wolfcrypt/src/asn.c. First, a bounds check only validates one available slot before writing two OID arc values (out[0] and out[1]), enabling a 2-byte out-of-bounds write when outSz equals 1. Second, multiple callers pass sizeof(decOid) (64 bytes on 64-bit platforms) instead of the element count MAX_OID_SZ (32), causing the function to accept crafted OIDs with 33 or more arcs that write past the end of the allocated buffer.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/wolfSSL/wolfssl |
Credits
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CVE-2026-5068 (GCVE-0-2026-5068)
Vulnerability from cvelistv5 – Published: 2026-06-09 06:20 – Updated: 2026-06-09 13:10
VLAI
EPSS
VEX
Title
bt: l2cap le coc: remote oob write via seg counter stored in net_buf user_data
Summary
A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation (via chan_ops.alloc_buf) and the chosen RX pool has a user_data_size smaller than 2 bytes, the segmentation counter stored in the net_buf user_data area is written out of bounds in l2cap_chan_le_recv_seg (subsys/bluetooth/host/l2cap.c). The observed effects are an AddressSanitizer abort and, without ASan, heap corruption / fatal error.
Severity
7.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Affected:
1.14.0 , ≤ 4.3.0
(git)
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CVE-2026-5067 (GCVE-0-2026-5067)
Vulnerability from cvelistv5 – Published: 2026-06-09 06:01 – Updated: 2026-06-09 13:12
VLAI
EPSS
VEX
Title
Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key
Summary
A remote, unauthenticated attacker can trigger memory corruption in Zephyr's HTTP server WebSocket upgrade path by sending a crafted Sec-WebSocket-Key header. The HTTP/1 header parser copies the header into a fixed-size buffer using a bounded copy that does not guarantee NUL termination when the input length reaches the buffer size. During upgrade handling the buffer is copied to a local stack buffer and passed to strlen(); if no NUL exists in-bounds, strlen() reads beyond the stack buffer and subsequent concatenation with the WebSocket magic string can write out of bounds. This leads to out-of-bounds read and write on stack memory, resulting in crash (denial of service) and potentially code execution. The path is reachable when CONFIG_HTTP_SERVER_WEBSOCKET is enabled.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
3.7.0 , ≤ 4.3.0
(git)
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CVE-2026-5066 (GCVE-0-2026-5066)
Vulnerability from cvelistv5 – Published: 2026-06-04 20:31 – Updated: 2026-06-05 18:26
VLAI
EPSS
VEX
Title
net: sockets: tls: Potential out-of-bounds write/read in socket_op_vtable::connect function
Summary
A potential out-of-bounds write/read exists in the TLS socket connect path of the network sockets subsystem (subsys/net/lib/sockets/sockets_tls.c). When the TLS session cache is enabled, tls_session_store() and tls_session_restore() memcpy the caller-supplied address into a fixed-size buffer using the caller-controlled addrlen value without validating it against the destination size. struct net_sockaddr is an opaque type, so an application can pass an addrlen larger than sizeof(struct net_sockaddr) (for example 128 bytes into a 24-byte stack buffer), causing the memcpy to read and write past the end of the address memory used by the TLS session cache. This out-of-bounds write can lead to a crash and denial of service, and potentially to arbitrary code execution.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Affected:
* , ≤ 4.3
(git)
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CVE-2026-4756 (GCVE-0-2026-4756)
Vulnerability from cvelistv5 – Published: 2026-03-24 06:05 – Updated: 2026-03-24 13:30
VLAI
EPSS
VEX
Title
Out-of-bounds Write in MolotovCherry Android-ImageMagick7
Summary
Out-of-bounds Write vulnerability in MolotovCherry Android-ImageMagick7.This issue affects Android-ImageMagick7: before 7.1.2-11.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/MolotovCherry/Android-ImageMag… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MolotovCherry | Android-ImageMagick7 |
Affected:
0 , < 7.1.2-11
(git)
|
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CVE-2026-4746 (GCVE-0-2026-4746)
Vulnerability from cvelistv5 – Published: 2026-03-24 03:28 – Updated: 2026-03-24 18:25
VLAI
EPSS
VEX
Title
Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton
Summary
Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src modules). This vulnerability is associated with program files inflate.C.
This issue affects proton: before 1.6.16.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/timeplus-io/proton/pull/943 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| timeplus-io | proton |
Affected:
0 , < 1.6.16
(git)
|
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CVE-2026-4430 (GCVE-0-2026-4430)
Vulnerability from cvelistv5 – Published: 2026-05-07 07:16 – Updated: 2026-05-07 13:03
VLAI
EPSS
VEX
Title
Heap Buffer Overflow in AgileEngine
Summary
Out-of-bounds write vulnerability in The Document Foundation LibreOffice via crafted OOXML documents with mismatched encryption salt parameters.
This issue affects LibreOffice: from 26.2 before 26.2.3, from 25.8 before 25.8.7.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Document Foundation | LibreOffice |
Affected:
26.2 , < 26.2.3
(26 series)
Affected: 25.8 , < 25.8.7 (25 series) |
Date Public
2026-05-06 15:42
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CVE-2026-4407 (GCVE-0-2026-4407)
Vulnerability from cvelistv5 – Published: 2026-03-18 21:44 – Updated: 2026-03-19 14:01
VLAI
EPSS
VEX
Title
Out-of-bounds array write in Xpdf 4.06 due to missing validation
Summary
Out-of-bounds array write in Xpdf 4.06 and earlier, due to incorrect validation of the "N" field in ICCBased color spaces.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
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CVE-2026-4016 (GCVE-0-2026-4016)
Vulnerability from cvelistv5 – Published: 2026-03-12 08:32 – Updated: 2026-03-12 13:24 X_Open Source
VLAI
EPSS
VEX
Title
GPAC SVG Parser load_svg.c svgin_process out-of-bounds write
Summary
A security vulnerability has been detected in GPAC 26.03-DEV. Affected by this vulnerability is the function svgin_process of the file src/filters/load_svg.c of the component SVG Parser. The manipulation leads to out-of-bounds write. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. The identifier of the patch is 7618d7206cdeb3c28961dc97ab0ecabaff0c8af2. It is suggested to install a patch to address this issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.350538 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.350538 | signaturepermissions-required |
| https://vuldb.com/?submit.769798 | third-party-advisory |
| https://github.com/gpac/gpac/issues/3468 | issue-tracking |
| https://github.com/user-attachments/files/2549404… | exploit |
| https://github.com/gpac/gpac/commit/7618d7206cdeb… | patch |
| https://github.com/gpac/gpac/ | product |
Impacted products
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CVE-2026-3849 (GCVE-0-2026-3849)
Vulnerability from cvelistv5 – Published: 2026-03-19 20:29 – Updated: 2026-03-25 14:21
VLAI
EPSS
VEX
Title
Buffer Overflow in HPKE via Oversized ECH Config
Summary
Stack Buffer Overflow in wc_HpkeLabeledExtract via Oversized ECH Config. A vulnerability existed in wolfSSL 5.8.4 ECH (Encrypted Client Hello) support, where a maliciously crafted ECH config could cause a stack buffer overflow on the client side, leading to potential remote execution and client program crash. This could be exploited by a malicious TLS server supporting ECH. Note that ECH is off by default, and is only enabled with enable-ech.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| wolfSSL Inc. | wolfSSL |
Affected:
v5.6.0-stable , ≤ v5.8.4-stable
(git)
|
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Mitigation MIT-3
Requirements
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
- Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
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-9
Implementation
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
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 MIT-12
Operation
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
No CAPEC attack patterns related to this CWE.