Common Weakness Enumeration
CWE-121
AllowedStack-based Buffer Overflow
Abstraction: Variant · Status: Draft
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
5397 vulnerabilities reference this CWE, most recent first.
CVE-2026-74843 (GCVE-0-2026-74843)
Vulnerability from cvelistv5 – Published: 2026-08-17 11:15 – Updated: 2026-08-17 14:44
VLAI
EPSS
VEX
Title
Wavlink WN531P3/WN535M1 Export Pingortrace CGI export_pingortrace.cgi strcpy stack-based overflow
Summary
A vulnerability was determined in Wavlink WN531P3 and WN535M1 V250922. Affected by this vulnerability is the function strcpy of the file /etc/lighttpd/www/cgi-bin/export_pingortrace.cgi of the component Export Pingortrace CGI. Executing a manipulation of the argument HTTP_COOKIE can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 14:44 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/391205 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/391205/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-74843 | third-party-advisory |
| https://vuldb.com/submit/875331 | third-party-advisory |
| https://github.com/wcndsb-sketch/WAVLINK_WN535M1-… | exploit |
Impacted products
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CVE-2026-73070 (GCVE-0-2026-73070)
Vulnerability from cvelistv5 – Published: 2026-08-11 15:21 – Updated: 2026-08-11 15:58
VLAI
EPSS
VEX
Title
Vim: Stack Buffer Overflow in the Vim Socket Server
Summary
Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:56 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/vim/vim/security/advisories/GH… | x_refsource_CONFIRM |
| https://github.com/vim/vim/commit/5598618b2daf8e3… | x_refsource_MISC |
| https://github.com/vim/vim/releases/tag/v9.2.0842 | x_refsource_MISC |
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CVE-2026-71407 (GCVE-0-2026-71407)
Vulnerability from cvelistv5 – Published: 2026-08-12 12:19 – Updated: 2026-08-13 03:55
VLAI
EPSS
VEX
Summary
A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 00:00 UTC
CWE
- CWE-121 - Execute unauthorized code or commands
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Fortinet | FortiOS |
Affected:
7.6.1 , ≤ 7.6.6
(semver)
cpe:2.3:o:fortinet:fortios:7.6.6:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortios:7.6.5:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortios:7.6.4:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortios:7.6.3:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortios:7.6.1:*:*:*:*:*:*:* |
|
| Fortinet | FortiPAM |
Affected:
1.8.0 , ≤ 1.8.4
(semver)
Affected: 1.7.0 , ≤ 1.7.2 (semver) Affected: 1.6.0 , ≤ 1.6.2 (semver) Affected: 1.5.0 , ≤ 1.5.1 (semver) Affected: 1.4.0 , ≤ 1.4.3 (semver) Affected: 1.3.0 , ≤ 1.3.1 (semver) Affected: 1.2.0 Affected: 1.1.0 , ≤ 1.1.2 (semver) Affected: 1.0.0 , ≤ 1.0.3 (semver) cpe:2.3:o:fortinet:fortipam:1.8.4:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.8.3:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.8.2:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.8.1:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.8.0:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.7.2:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.7.1:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.7.0:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.6.2:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.6.1:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.6.0:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.5.1:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.5.0:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.4.3:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.4.2:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.4.1:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.4.0:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.3.1:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.3.0:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.2.0:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.1.2:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.1.1:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.1.0:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.0.3:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.0.2:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.0.1:*:*:*:*:*:*:* cpe:2.3:o:fortinet:fortipam:1.0.0:*:*:*:*:*:*:* |
|
| Fortinet | FortiProxy |
Affected:
7.6.0 , ≤ 7.6.4
(semver)
Affected: 7.4.0 , ≤ 7.4.11 (semver) Affected: 7.2.0 , ≤ 7.2.16 (semver) Affected: 7.0.0 , ≤ 7.0.23 (semver) cpe:2.3:a:fortinet:fortiproxy:7.6.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.6.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.6.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.6.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.6.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.11:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.10:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.9:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.4.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.16:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.15:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.14:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.13:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.12:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.11:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.10:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.9:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.2.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.23:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.22:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.21:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.20:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.19:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.18:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.17:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.16:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.15:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.14:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.13:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.12:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.11:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.10:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.9:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiproxy:7.0.0:*:*:*:*:*:*:* |
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CVE-2026-71267 (GCVE-0-2026-71267)
Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:46
VLAI
EPSS
VEX
Title
microtar Stack Buffer Overflow in mtar_write_file_header() and mtar_write_dir_header()
Summary
microtar's mtar_write_file_header and mtar_write_dir_header functions (src/microtar.c) copy a caller-supplied entry name into the 100-byte field of a stack-allocated mtar_header_t via strcpy(h.name, name), with no check that strlen(name) is less than 100 before the copy.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 15:54 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar | third-party-advisory |
| https://github.com/rxi/microtar/blob/master/src/m… | third-party-advisory |
Date Public
2026-08-05 12:26
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CVE-2026-71266 (GCVE-0-2026-71266)
Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:46
VLAI
EPSS
VEX
Title
tinyobjloader-c Stack Buffer Overflow in MTL Material File Line Parsing
Summary
tinyobjloader-c's tinyobj_parse_and_index_mtl_file (tinyobj_loader_c.h) reads each line of a .mtl material file into a fixed 4096-byte stack buffer via memcpy(linebuf, p, p_len), guarded only by . The identical vulnerable pattern is duplicated in a second function in the same file.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 15:40 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/syoyo/tinyobjloader-c | third-party-advisory |
| https://github.com/syoyo/tinyobjloader-c/blob/mas… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| syoyo | tinyobjloader-c |
Affected:
0 , ≤ *
(custom)
|
Date Public
2026-08-05 12:26
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CVE-2026-71265 (GCVE-0-2026-71265)
Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:46
VLAI
EPSS
VEX
Title
Domoticz MochadTCP Stack Buffer Overflow via MOCHAD_RFSEC strcpy()
Summary
Domoticz's MochadTCP::MatchLine handler for MOCHAD_RFSEC messages (hardware/MochadTCP.cpp) copies network-received data from the up-to-1028-byte m_mochadbuffer into a fixed 50-byte stack buffer tempRFSECbuf using strcpy with no length check, across three separate code branches (DS10A/KR10A/MS10A device types).
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 15:30 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/domoticz/domoticz | third-party-advisory |
| https://github.com/domoticz/domoticz/blob/master/… | third-party-advisory |
Date Public
2026-08-05 12:26
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CVE-2026-70346 (GCVE-0-2026-70346)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:05 – Updated: 2026-08-16 18:46
VLAI
EPSS
VEX
Title
Windows Installer Elevation of Privilege Vulnerability
Summary
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 13:13 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
20 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9418
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7663
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7663
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7517
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7517
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9168
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9168
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2704
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26280
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26280
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23338
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23338
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9418
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9418
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5499
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33296
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33296
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-70344 (GCVE-0-2026-70344)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:05 – Updated: 2026-08-16 18:46
VLAI
EPSS
VEX
Title
Windows Installer Elevation of Privilege Vulnerability
Summary
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 18:20 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
20 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9418
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7663
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7663
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7517
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7517
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9168
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9168
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2704
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26280
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26280
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23338
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23338
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9418
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9418
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5499
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33296
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33296
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-68817 (GCVE-0-2026-68817)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:07 – Updated: 2026-08-16 18:48
VLAI
EPSS
VEX
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 00:00 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Excel 2016 |
Affected:
16.0.0.0 , < 16.0.5565.1001
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Office Online Server |
Affected:
16.0.0.0 , < 16.0.10417.20175
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-68816 (GCVE-0-2026-68816)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:05 – Updated: 2026-08-16 18:46
VLAI
EPSS
VEX
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 03:57 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Excel 2016 |
Affected:
16.0.0.0 , < 16.0.5565.1001
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Office Online Server |
Affected:
16.0.0.0 , < 16.0.10417.20175
(custom)
|
Date Public
2026-08-11 14:00
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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
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Do not use dangerous functions such as gets. Use safer, equivalent functions which check for boundary errors.
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].
No CAPEC attack patterns related to this CWE.