CVE-2025-13151

7.5 HIGH

Published: January 07, 2026 Modified: February 02, 2026

Description

Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://gitlab.com/gnutls/libtasn1

Source: cret@cert.org

Product

https://gitlab.com/gnutls/libtasn1/-/merge_requests/121

Source: cret@cert.org

Patch

http://www.openwall.com/lists/oss-security/2026/01/08/5

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing List Patch

https://www.kb.cert.org/vuls/id/271649

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

0.1%

19th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-787

Affected Vendors

gnu

Related CVEs