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CVE

CVE-2026-24882

In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for

In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for TPM-backed RSA and ECC keys.

HIGH · CVSS 8.4 EPSS 8e-05
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-121Stack-based Buffer Overflow
▤

Affected Products & Versions

2
gnupg>= 2.5.13 and < 2.5.17
gpg4win>= 5.0.0 and < 5.0.1
⚠

Public Exploits & PoCs

1
pocdev.gnupg.org · T8045dev.gnupg.org
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighFile Encryption/Decryption Via Gpg4win From Suspicious Locations
productmediumFile Decryption Using Gpg4win
productmediumFile Encryption Using Gpg4win
▣

Scoring & Timeline

8.4
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Jan 2026 · 07:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

9
suse-csafSUSE-SU-2026:20487-1
suse-csafSUSE-SU-2026:20444-1
suse-csafSUSE-SU-2026:0434-1
suse-csafopenSUSE-SU-2026:10112-1
suse-csafopenSUSE-SU-2026:20136-1
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.openwall.com/lists/oss-security/2026/01/27/8Mailing ListThird Party Advisory
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