CVE-2026-24882 Memory corruption in GnuPG

High 8.4 Published 27 Jan 2026 Updated 15 Jul 2026

A stack-based buffer overflow in GnuPG's tpm2daemon allows attackers to execute arbitrary code when handling TPM-backed keys.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-24882?

CVE-2026-24882 is a high-severity memory corruption vulnerability in GnuPG, published on 27 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.

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.

Weakness: CWE-121

Which versions are affected by CVE-2026-24882?

It affects 2 products.

Linux distribution packages (19)

`gnupg2` AlmaLinux:10	All versions	`2.4.5-4.el10_1`
`gnupg2-smime` AlmaLinux:10	All versions	`2.4.5-4.el10_1`
`gnupg2` Red Hat:enterprise_linux:10.1	All versions	`0:2.4.5-4.el10_1`
`gnupg2-debuginfo` Red Hat:enterprise_linux:10.1	All versions	`0:2.4.5-4.el10_1`
`gnupg2-debugsource` Red Hat:enterprise_linux:10.1	All versions	`0:2.4.5-4.el10_1`
`gnupg2-smime` Red Hat:enterprise_linux:10.1	All versions	`0:2.4.5-4.el10_1`
`gnupg2-smime-debuginfo` Red Hat:enterprise_linux:10.1	All versions	`0:2.4.5-4.el10_1`
`gnupg2` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.4.5-2.el10_0.2`
`gnupg2-debuginfo` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.4.5-2.el10_0.2`
`gnupg2-debugsource` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.4.5-2.el10_0.2`
`gnupg2-smime` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.4.5-2.el10_0.2`
`gnupg2-smime-debuginfo` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.4.5-2.el10_0.2`
`gnupg2` Rocky Linux:10	All versions	`0:2.4.5-4.el10_1`
`gpg2` SUSE:Linux Enterprise Module for Basesystem 15 SP7	All versions	`2.4.4-150600.3.15.1`
`gpg2` SUSE:Linux Enterprise Server 15 SP6-LTSS	All versions	`2.4.4-150600.3.15.1`
`gpg2` SUSE:Linux Enterprise Server for SAP Applications 15 SP6	All versions	`2.4.4-150600.3.15.1`
`gpg2` SUSE:Linux Micro 6.0	All versions	`2.4.4-7.1`
`gpg2` SUSE:Linux Micro 6.1	All versions	`2.4.4-slfo.1.1_7.1`
`gpg2` openSUSE:Leap 15.6	All versions	`2.4.4-150600.3.15.1`

Products include Gnupg Gnupg, Gpg4win Gpg4win.

How do I fix CVE-2026-24882?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-24882 being exploited?

There is no known exploitation of CVE-2026-24882 in the wild and no public exploit code.

Sources

Also known as ALSA-2026:2719, AZL-75266, AZL-76146, BELL-CVE-2026-24882, DEBIAN-CVE-2026-24882, ECHO-cc02-a477-2575 and 14 more.