CVE-2025-13151

HIGH
2026-01-07 [email protected]
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
Patch Released
Feb 02, 2026 - 19:27 nvd
Patch available
CVE Published
Jan 07, 2026 - 22:15 nvd
HIGH 7.5

Tags

Buffer Overflow Stack Overflow Libtasn1 Redhat Suse

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.

Analysis

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 7.5 HIGH]

Technical Context

Classified as CWE-787 (Out-of-bounds Write). Affects Libtasn1. 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.

Affected Products

Vendor: Gnu. Product: Libtasn1. Versions: up to 4.20.0.

Remediation

A vendor patch is available — apply it immediately. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +38
POC: 0

Vendor Status

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CVE-2025-13151 vulnerability details – vuln.today
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