Windows GDI+
CVE-2026-20846 — GDI+ Denial of Service Vulnerability
Executive Summary
Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network.
Overview
7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.5
EPSS Score
0.0134
probability of exploitation in the next 30 days
0.68366 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
24 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Office for Android | Release Notes (Security Update) |
Important | Denial of Service | Maybe |
| Windows 10 Version 1607 for 32-bit Systems | 5075999 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1607 for x64-based Systems | 5075999 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 5075904 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1809 for x64-based Systems | 5075904 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 21H2 for 32-bit Systems | 5075912 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 21H2 for ARM64-based Systems | 5075912 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 21H2 for x64-based Systems | 5075912 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 22H2 for 32-bit Systems | 5075912 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 22H2 for ARM64-based Systems | 5075912 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 22H2 for x64-based Systems | 5075912 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 Version 23H2 for ARM64-based Systems | 5075941 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 Version 23H2 for x64-based Systems | 5075941 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 Version 24H2 for ARM64-based Systems 5077181 (Security Update) 5077212 (Security Hotpatch Update) Important Denial of Service 5073379 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26100.7840 10.0.26100.7781 Yes None Windows 11 Version 24H2 for x64-based Systems 5077212 (Security Hotpatch Update) 5077181 (Security Update) Important Denial of Service 5074109 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26100.7781 10.0.26100.7840 Yes None Windows 11 Version 25H2 for ARM64-based Systems 5077181 (Security Update) 5077212 (Security Hotpatch Update) Important Denial of Service 5074109 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26200.7840 10.0.26200.7781 Yes None Windows 11 Version 25H2 for x64-based Systems 5077181 (Security Update) 5077212 (Security Hotpatch Update) Important Denial of Service 5074109 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26200.7840 10.0.26200.7781 Yes None Windows 11 Version 26H1 for ARM64-based Systems | 5077179 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 version 26H1 for x64-based Systems | 5077179 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2012 | 5075971 (Monthly Rollup) |
Important | Denial of Service | Yes |
| Windows Server 2012 (Server Core installation) | 5075971 (Monthly Rollup) |
Important | Denial of Service | Yes |
| Windows Server 2012 R2 | 5075970 (Monthly Rollup) |
Important | Denial of Service | Yes |
| Windows Server 2012 R2 (Server Core installation) | 5075970 (Monthly Rollup) |
Important | Denial of Service | Yes |
| Windows Server 2016 | 5075999 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2016 (Server Core installation) | 5075999 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2019 | 5075904 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2019 (Server Core installation) | 5075904 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2022 5075906 (Security Update) 5075943 (Security Hotpatch Update) Important Denial of Service 5073457 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.20348.4773 10.0.20348.4711 Yes None Windows Server 2022 (Server Core installation) 5075906 (Security Update) 5075943 (Security Hotpatch Update) Important Denial of Service 5073457 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.20348.4773 10.0.20348.4711 Yes None Windows Server 2022, 23H2 Edition (Server Core installation) | 5075897 (Security Update) |
Important | Denial of Service | Yes |
Patches
9 patches
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Maybe |
5075999 |
Security Update | Yes |
5075904 |
Security Update | Yes |
5075912 |
Security Update | Yes |
5075941 |
Security Update | Yes |
5077179 |
Security Update | Yes |
5075971 |
Monthly Rollup | Yes |
5075970 |
Monthly Rollup | Yes |
5075897 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
0ccbbf129444eb66344ccafb92b00df4
xina1i of Anity Lab
References
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