VDB-343079 · CVE-2026-24882 · Nessus 296933

GnuPG up to 2.5.16 tpm2daemon stack-based overflow

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7.1	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in GnuPG up to 2.5.16. Affected by this vulnerability is an unknown functionality of the component tpm2daemon. The manipulation leads to stack-based overflow. This vulnerability is traded as CVE-2026-24882. An attack has to be approached locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in GnuPG up to 2.5.16. It has been rated as critical. This issue affects some unknown functionality of the component tpm2daemon. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2026-24882 since 01/27/2026. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 296933 (Linux Distros Unpatched Vulnerability : CVE-2026-24882), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.5.17 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (296933) and CERT Bund (WID-SEC-2026-0231). Be aware that VulDB is the high quality source for vulnerability data.

Affected

Fedora Linux
SUSE Linux
Open Source GnuPG
Open Source Gpg4win

Productinfo

Name

GnuPG

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CNA Base Score: 8.4
CNA Vector (MITRE): 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 296933
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-24882

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: GnuPG 2.5.17

Timelineinfo

01/27/2026 Advisory disclosed
01/27/2026 +0 days CVE reserved
01/27/2026 +0 days VulDB entry created
07/01/2026 +154 days VulDB entry last update

Sourcesinfo

Advisory: openwall.com
Status: Confirmed

CVE: CVE-2026-24882 (🔒)
GCVE (CVE): GCVE-0-2026-24882
GCVE (VulDB): GCVE-100-343079
CERT Bund: WID-SEC-2026-0231 - GnuPG und Gpg4win: Mehrere Schwachstellen

Entryinfo

Created: 01/27/2026 20:49
Updated: 07/01/2026 01:17
Changes: 01/27/2026 20:49 (63), 01/28/2026 13:04 (2), 01/28/2026 22:47 (7), 02/03/2026 10:36 (1), 02/03/2026 14:09 (1), 02/07/2026 03:43 (11), 07/01/2026 01:17 (1)
Complete: 🔍
Cache ID: 216::103