Vulnerability · Published Jan 27, 2026 · Assigned by mitre
CVE-2026-24882
High 8.4
In plain English
A high-severity stack buffer overflow in GnuPG from GnuPG. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.4High
Exploit odds (30 days)0.4%top 61.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | gnupg2 | 2.4.5-4.el10_1 | ALSA-2026:2719 |
| AlmaLinux:10 | gnupg2-smime | 2.4.5-4.el10_1 | ALSA-2026:2719 |
| Debian:13 | gnupg2 | no fix listed | DEBIAN-CVE-2026-24882 |
| Debian:14 | gnupg2 | 2.4.9-4 | DEBIAN-CVE-2026-24882 |
| Rocky Linux:10 | gnupg2 | 0:2.4.5-4.el10_1 | RLSA-2026:2719 |
| Ubuntu:24.04:LTS | gnupg2 | no fix listed | UBUNTU-CVE-2026-24882 |
| Ubuntu:25.10 | gnupg2 | no fix listed | UBUNTU-CVE-2026-24882 |
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.openwall.com/lists/oss-security/2026/01/27/8
- https://dev.gnupg.org/T8045
- https://access.redhat.com/security/cve/CVE-2026-24882 vdb-entry, x_refsource_REDHAT
- RHBZ#2433464 issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24882.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:2753 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:2719 vendor-advisory, x_refsource_REDHAT