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CVE-2026-118131

CVE-2026-118131

9.8 Critical

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary subdirectories under this path. An attacker with low-privilege access can create the expected GnuPG configuration directory and inject malicious configuration files consumed by GnuPG components. This can result in code execution within the security context of the victim user.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.43%Up 0.2 points since Oct 28, 2026
90%50%10%1%

What each source reports

CVE List Score used 9.8

CVE-2026-118131

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary subdirectories under this path. An attacker with low-privilege access can create the expected GnuPG configuration directory and inject malicious configuration files consumed by GnuPG components. This can result in code execution within the security context of the victim user.

Record
CVE-2026-118131
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-732, CWE-379, CWE-427
Updated
2026-11-04
EUVDEUVD-2026-111235 9.8

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary subdirectories under this path. An attacker with low-privilege access can create the expected GnuPG configuration directory and inject malicious configuration files consumed by GnuPG components. This can result in code execution within the security context of the victim user.

Record
EUVD-2026-111235
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-04
GitHub AdvisoriesGHSA-c8cg-36rg-65fq 9.8

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access...

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary subdirectories under this path. An attacker with low-privilege access can create the expected GnuPG configuration directory and inject malicious configuration files consumed by GnuPG components. This can result in code execution within the security context of the victim user.

Record
GHSA-c8cg-36rg-65fq
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-379
Updated
2026-11-04
NVD 9.8

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary subdirectories under this path. An attacker with low-privilege access can create the expected GnuPG configuration directory and inject malicious configuration files consumed by GnuPG components. This can result in code execution within the security context of the victim user.

Record
CVE-2026-118131
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-379, CWE-427, CWE-732
Updated
2026-11-04
OSVUBUNTU-CVE-2026-118131 9.8

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary subdirectories under this path. An attacker with low-privilege access can create the expected GnuPG configuration directory and inject malicious configuration files consumed by GnuPG components. This can result in code execution within the security context of the victim user.

Record
UBUNTU-CVE-2026-118131
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-06
OSVAZL-111956 No score

CVE-2026-118131 affecting package gnupg2 2.4.9-3

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary subdirectories under this path. An attacker with low-privilege access can create the expected GnuPG configuration directory and inject malicious configuration files consumed by GnuPG components. This can result in code execution within the security context of the victim user.

Record
AZL-111956
Updated
2026-11-05

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gnupg2
Azure Linux:3
through 2.4.9-3 None known
gnupg2
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
2.0.28-3ubuntu12.0.28-3ubuntu22.1.11-6ubuntu12.1.11-6ubuntu22.1.11-6ubuntu2.12.1.11-6ubuntu2.1+esm12.1.11-6ubuntu2.1+esm22.1.11-6ubuntu2.1+esm3
None known
gnupg2
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
2.1.15-1ubuntu82.2.4-1ubuntu12.2.4-1ubuntu1.12.2.4-1ubuntu1.22.2.4-1ubuntu1.3
Show 5 moreShow less
2.2.4-1ubuntu1.42.2.4-1ubuntu1.52.2.4-1ubuntu1.62.2.4-1ubuntu1.6+esm12.2.4-1ubuntu1.6+esm2
None known
gnupg2
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
2.2.12-1ubuntu32.2.17-3ubuntu12.2.19-3ubuntu22.2.19-3ubuntu2.12.2.19-3ubuntu2.22.2.19-3ubuntu2.42.2.19-3ubuntu2.52.2.19-3ubuntu2.5+esm1
None known
gnupg2
Ubuntu:22.04:LTS
All versions, plus listed versions
2.2.20-1ubuntu42.2.27-2ubuntu12.2.27-3ubuntu12.2.27-3ubuntu22.2.27-3ubuntu2.12.2.27-3ubuntu2.32.2.27-3ubuntu2.42.2.27-3ubuntu2.5
None known
gnupg2
Ubuntu:24.04:LTS
All versions, plus listed versions
2.2.40-1.1ubuntu12.4.4-2ubuntu72.4.4-2ubuntu152.4.4-2ubuntu162.4.4-2ubuntu17
Show 4 moreShow less
2.4.4-2ubuntu17.22.4.4-2ubuntu17.32.4.4-2ubuntu17.42.4.4-2ubuntu17.6
None known
gnupg2
Ubuntu:26.10
All versions, plus listed versions
2.4.8-4ubuntu32.4.9-4ubuntu12.4.9-4ubuntu22.4.9-4ubuntu3
None known
gnupg2
Ubuntu:26.04:LTS
All versions, plus listed versions
2.4.8-2ubuntu22.4.8-4ubuntu12.4.8-4ubuntu22.4.8-4ubuntu32.4.8-4ubuntu3.1
None known

History

History
RecordedChangedSources
cwes, severityCVE List
cwes, facts, severityGitHub Advisories
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-118131 is a critical vulnerability (CVSS 9.8) in Gnupg, published October 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. No source names a fixed version.

References

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