CVE-2026-24882

Status: ModifiedHigh (7.8)—

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.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base score: 7.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.44%
Percentile among all scored CVEs: 36
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1068 Exploitation for Privilege Escalationprivilege escalation90 %
Primary impactT1059 Command and Scripting Interpreterexecution85 %
Secondary impactT1005 Data from Local Systemcollection75 %

Vector AV:L/PR:L/UI:N indica acceso local sin interacción del usuario (T1068). Buffer overflow en tpm2daemon permite ejecución de código (T1059) y potencial lectura de datos sensibles de claves RSA/ECC (T1005).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Behavior Prevention on Endpoint

Affected technologies (2)

Gnupg — Gnupg Gpg4win — Gpg4win

CWEs

CWE-121
CWE-121

References

Raw JSON (NVD)

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