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High Severity Vulnerability

This vulnerability has been rated as High severity. Immediate action is recommended.

CVE-2025-13151

High
Low Medium High Critical
7.5
CVSS Score
Published: Jan 07, 2026
Last Modified: Jan 08, 2026

Vulnerability 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.

CVSS Metrics

Common Vulnerability Scoring System

Vector String:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
N
Attack Complexity
L
Privileges Required
N
User Interaction
N
Scope
U
Confidentiality
N
Integrity
N
Availability
H

Available Security Patches

1 patch available from vendors

View All Patches
Canonical (Ubuntu)

USN-7954-1

USN-7954-1: Libtasn1 vulnerabilities

Severity
Unknown
Released
Jan 12, 2026
Security Update
View Details Vendor Page
Browse All Security Patches

References & Resources

Severity Details

7.5
out of 10.0
High

Key Information

Published Date
January 07, 2026

External Resources

NIST
NIST NVD
National Vulnerability Database
CD
CVE Details
Detailed vulnerability info
MT
MITRE CVE
Official CVE record