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.
15107 vulnerabilities reference this CWE, most recent first.
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
Credits
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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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CVE-2026-3842 (GCVE-0-2026-3842)
Vulnerability from cvelistv5 – Published: 2026-07-16 00:20 – Updated: 2026-07-16 12:42
VLAI
EPSS
VEX
Title
Qemu-kvm: hyperv/syndbg: missing mapped-length guard after cpu_physical_memory_map causes host oob write
Summary
A flaw was found in QEMU. This vulnerability allows a local attacker within a guest virtual machine to write data beyond its allocated memory. This occurs when cpu_physical_memory_map() returns a shorter length than expected, leading to an out-of-bounds write. Successful exploitation could result in unauthorized access to guest memory or corruption of heap-allocated objects, potentially causing information disclosure, data integrity issues, or a denial of service.
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
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-3842 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2458150 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
7.1.0 , < 11.0.0
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-03-09 00:00
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CVE-2026-3703 (GCVE-0-2026-3703)
Vulnerability from cvelistv5 – Published: 2026-03-08 04:32 – Updated: 2026-03-10 14:00
VLAI
EPSS
VEX
Title
Wavlink NU516U1 login.cgi sub_401A10 out-of-bounds write
Summary
A flaw has been found in Wavlink NU516U1 251208. This affects the function sub_401A10 of the file /cgi-bin/login.cgi. Executing a manipulation of the argument ipaddr can lead to out-of-bounds write. The attack may be performed from remote. The exploit has been published and may be used. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Severity
9.8 (Critical)
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.349649 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.349649 | signaturepermissions-required |
| https://vuldb.com/?submit.759226 | third-party-advisory |
| https://github.com/Wlz1112/Wavlink-NU516U1-V25120… | related |
| https://github.com/Wlz1112/Wavlink-NU516U1-V25120… | exploit |
| https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U… | patch |
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CVE-2026-3548 (GCVE-0-2026-3548)
Vulnerability from cvelistv5 – Published: 2026-03-19 17:45 – Updated: 2026-03-19 18:00
VLAI
EPSS
VEX
Title
Buffer overflow in CRL number parsing in wolfSSL
Summary
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
2 references
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CVE-2026-3342 (GCVE-0-2026-3342)
Vulnerability from cvelistv5 – Published: 2026-03-03 13:17 – Updated: 2026-03-04 15:22
VLAI
EPSS
VEX
Title
WatchGuard Firebox Out of Bounds Write Vulnerability
Summary
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface.
This vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
11.9 , ≤ 11.12.4+541730
(semver)
Affected: 12.0 , ≤ 12.11.7 (semver) Affected: 12.5 , ≤ 12.5.16 (semver) Affected: 2025.1 , ≤ 2026.1.1 (semver) |
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CVE-2026-3298 (GCVE-0-2026-3298)
Vulnerability from cvelistv5 – Published: 2026-04-21 14:45 – Updated: 2026-06-10 18:05
VLAI
EPSS
VEX
Title
Out-of-bounds write in Windows asyncio.ProacterEventLoop.sock_recvfrom_into() when using nbytes
Summary
The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. This allowed for an out-of-bounds buffer write if data was larger than the buffer size. Non-Windows platforms are not affected.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
3.11.0 , < 3.13.14
(python)
Affected: 3.14.0a1 , < 3.14.5rc1 (python) Affected: 3.15.0a1 , < 3.15.0b1 (python) |
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"url": "https://github.com/python/cpython/commit/27522b7d6e6588f03e61099dd858cd5a9314e2f2"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/95633d2aad4721e25e4dfd9f43dfb6e1edcbd741"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Out-of-bounds write in Windows asyncio.ProacterEventLoop.sock_recvfrom_into() when using nbytes",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
"assignerShortName": "PSF",
"cveId": "CVE-2026-3298",
"datePublished": "2026-04-21T14:45:01.919Z",
"dateReserved": "2026-02-26T20:12:47.041Z",
"dateUpdated": "2026-06-10T18:05:02.868Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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.