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.
3475 vulnerabilities reference this CWE, most recent first.
CVE-2026-78547 (GCVE-0-2026-78547)
Vulnerability from cvelistv5 – Published: 2026-09-11 19:07 – Updated: 2026-09-11 19:34
VLAI
EPSS
VEX
Title
Out-of-Bounds Write
Summary
Out-of-bounds write vulnerability in Citrix Citrix Workspace app for Windows.
This issue affects Citrix Workspace app for Windows: before 2603.11 Current Release (CR), before 2507.1 LTSR CU3, and before LTSR 2607.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 19:34 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
Citrix
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Citrix | Citrix Workspace app for Windows |
Affected:
0 , < 2603.11 Current Release (CR)
(patch)
Affected: 0 , < 2507.1 LTSR CU3 (patch) Affected: 0 , < LTSR 2607 (patch) |
Date Public
2026-09-08 18:58
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CVE-2026-78524 (GCVE-0-2026-78524)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-10-31 16:17
VLAI
EPSS
VEX
Title
Microsoft Office Remote Code Execution Vulnerability
Summary
Out-of-bounds write in Microsoft Office allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 04:21 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < 16.0.20326.20138
(custom)
|
|
| Microsoft | Microsoft Office 2016 |
Affected:
16.0.0 , < 16.0.5569.1000
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < 16.0.10417.20207
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26090911
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < 16.0.14334.20906
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < 16.0.17932.20976
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26090911
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26090911
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-78402 (GCVE-0-2026-78402)
Vulnerability from cvelistv5 – Published: 2026-10-30 19:11 – Updated: 2026-10-30 20:00
VLAI
EPSS
VEX
Title
Stack Buffer Overflow in Sentinel Keys Server
Summary
Stack-based buffer overflow and out-of-bounds
write vulnerability in Thales Sentinel Keys Server on Windows allows Overflow
Buffers.
Sentinel Keys Server does not check the length of the first field in
the input message. A local attacker may craft an input and send it to Sentinel
Keys Server. It may lead to code execution as NT AUTHORITY\SYSTEM enabling
local privilege escalation.
This issue affects Sentinel Keys Server: versions
lower than 1.3.8.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 20:00 UTC
Assigner
THA-PSIRT
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.thalesgroup.com/csm?id=kb_a… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Thalesgroup | Sentinel Keys Server |
Affected:
0 , < 1.3.8.0
(custom)
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CVE-2026-78183 (GCVE-0-2026-78183)
Vulnerability from cvelistv5 – Published: 2026-08-23 19:53 – Updated: 2026-08-25 19:32
VLAI
EPSS
VEX
Title
DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float
Summary
DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float.
quote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL. But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded by quotes plus NULL, which is length + 3 bytes. Every recognised literal (case-insensitive) overflows by 2 bytes, a single quote and a NULL.
This can be reached by the $dbh->quote method, for example
$dbh->quote( "Infinity", DBI::SQL_NUMERIC ).
This regression was introduced in 3.21.0 by the quote.c rewrite.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:32 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
CPANSec
CNA
References
5 references
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CVE-2026-78161 (GCVE-0-2026-78161)
Vulnerability from cvelistv5 – Published: 2026-08-24 00:45 – Updated: 2026-08-24 17:22 X_Open Source
VLAI
EPSS
VEX
Title
warmcat libwebsockets LECP CBOR Recording lecp.c report_raw_cbor out-of-bounds write
Summary
A vulnerability was found in warmcat libwebsockets 4.5.0. Impacted is the function report_raw_cbor of the file lib/misc/lecp.c of the component LECP CBOR Recording. The manipulation results in out-of-bounds write. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as 1d44554a1bb262db63ff4e240152a9deecd99054. It is best practice to apply a patch to resolve this issue.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 17:19 UTC
Assigner
VulDB
CNA
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/394543 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/394543/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-78161 | third-party-advisory |
| https://vuldb.com/submit/883225 | third-party-advisory |
| https://github.com/biniamf/pocs/tree/main/libwebs… | exploit |
| https://github.com/biniamf/pocs/blob/main/libwebs… | exploit |
| https://github.com/warmcat/libwebsockets/commit/1… | patch |
| https://github.com/warmcat/libwebsockets/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| warmcat | libwebsockets |
Affected:
4.5.0
cpe:2.3:a:warmcat:libwebsockets:*:*:*:*:*:*:*:* |
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CVE-2026-78119 (GCVE-0-2026-78119)
Vulnerability from cvelistv5 – Published: 2026-10-21 18:19 – Updated: 2026-10-23 21:27
VLAI
EPSS
VEX
Title
Out-of-bounds write in the Nuvoton NPCX eSPI Target-Attached-Flash receive path from an unvalidated host-supplied packet length
Summary
The Nuvoton NPCX eSPI driver parses Target-Attached-Flash (TAF) requests in espi_taf_parse() (drivers/espi/espi_npcx.c), taking the 12-bit length field directly out of the request header in the FLASHRXBUF FIFO. For write and RPMC OP1 requests it copied DIV_ROUND_UP(len, 4) words into struct espi_taf_pckt.src, a fixed 16-word (64-byte) member of a static structure, without ever comparing the length against that buffer or against the negotiated eSPI receive payload size (rx-plsize, 64 bytes on all in-tree NPCX/NPCK SoCs). Both the loop counter and the word count were uint8_t, so the copy ran up to 255 iterations.
An eSPI controller that emits a flash request whose header claims a payload larger than the negotiated maximum therefore drives up to 239 32-bit stores past the end of the structure — roughly 956 bytes of out-of-bounds write into .bss — from the eSPI flash receive interrupt handler, while the source reads walk past the end of the 18-word FLASHRXBUF register array into neighbouring eSPI registers. The same unvalidated length was then passed on to flash_write() in espi_taf_npcx_flash_write() with the 64-byte src buffer as source, reading up to 4 KB of adjacent controller SRAM into SPI flash at a host-chosen address, where the host can read it back. A related fixed-size stack buffer in taf_npcx_completion_handler() was overflowed by four bytes on the maximum-size completion path on SoCs whose tx-plsize is 64.
The defect is reachable only from the eSPI host side, and only by a request that violates the negotiated payload size, so it requires host firmware or bus-level control rather than ordinary host software; a compliant maximum-length write fits the buffer exactly and is handled correctly. Because TAF exists specifically so that the embedded controller arbitrates host access to shared flash (espi_taf_check_read_protect() / espi_taf_check_write_protect()), corrupting controller memory from a host-supplied field crosses the trust boundary the feature asserts; consequences range from controller crash or hang to corruption of driver state that gates the flash protection regions.
The fix widens the counters, rejects any request whose word count exceeds both ARRAY_SIZE(FLASHRXBUF) - NPCX_ESPI_FLASH_HEADER_ADDRESS_LEN and NPCX_TAF_RX_PAYLOAD_WORDS (derived from the devicetree rx-plsize), marks such packets with a new invalid_flag so espi_taf_work() answers them with an unsuccessful completion instead of processing them, bounds the transmit payload against FLASHTXBUF, and adds a default case for unsupported cycle types. Only configurations with CONFIG_ESPI_TAF enabled on an NPCX/NPCK target are affected; no in-tree board enables it by default.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 20:42 UTC
CWE
- CWE-787 - bounds
Assigner
zephyr
CNA
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject | zephyr |
Affected:
3.6.0 , < 4.5.0
(semver)
|
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CVE-2026-78011 (GCVE-0-2026-78011)
Vulnerability from cvelistv5 – Published: 2026-08-27 23:24 – Updated: 2026-09-03 20:49
VLAI
EPSS
VEX
Title
Fireware OS Integer Underflow in Iked Allows Unauthenticated Denial of Service (DoS)
Summary
An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:51 UTC
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-78011 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2025.0 , < 2026.2.2
(custom)
Affected: 12.0 , < 12.12.2 (custom) Affected: 2026.3 , < 2026.3.1 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
12.0 , < 12.5.20
(custom)
|
Date Public
2026-08-27 23:24
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CVE-2026-78010 (GCVE-0-2026-78010)
Vulnerability from cvelistv5 – Published: 2026-08-27 23:24 – Updated: 2026-09-03 20:49
VLAI
EPSS
VEX
Title
Fireware OS Stack-Based Buffer Overflow in iked Allows Unauthenticated Denial of Service
Summary
A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process iallows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:53 UTC
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-78010 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2025.0 , < 2026.2.2
(custom)
Affected: 12.0 , < 12.12.2 (custom) Affected: 2026.3 , < 2026.3.1 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
12.0 , < 12.5.20
(custom)
|
Date Public
2026-08-27 23:24
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CVE-2026-78008 (GCVE-0-2026-78008)
Vulnerability from cvelistv5 – Published: 2026-08-27 23:24 – Updated: 2026-09-03 20:49
VLAI
EPSS
VEX
Title
Fireware OS Authenticated Buffer Overflow in wgagent
Summary
A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 00:00 UTC
CWE
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-78008 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2025.0 , < 2026.2.2
(custom)
Affected: 12.0 , < 12.12.2 (custom) Affected: 2026.3 , < 2026.3.1 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
12.0 , < 12.5.20
(custom)
|
Date Public
2026-08-27 23:24
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CVE-2026-77642 (GCVE-0-2026-77642)
Vulnerability from cvelistv5 – Published: 2026-08-20 21:15 – Updated: 2026-08-27 16:07
VLAI
EPSS
VEX
Summary
tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or detached signature with unexpected signature digest type. Impact is minor for most Tor roles, but potentially major for directory authorities. This is TROVE-2026-019.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 16:03 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
mitre
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| torproject | Tor |
Affected:
0.2.8.2-alpha , < 0.4.9.9
(custom)
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* |
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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.