What is the CVSS score of CVE-2025-13151?

CVE-2025-13151 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of Libtasn1 are affected by CVE-2025-13151?

Organizations using libtasn1 face notable risk from CVE-2025-13151, a out-of-bounds write vulnerability rated CVSS 7.5.. A patch is available.

How to fix or mitigate CVE-2025-13151?

Within 7 days: Identify all affected systems running libtasn1 and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Libtasn1 CVE-2025-13151

HIGH

Out-of-bounds Write (CWE-787)

2026-01-07 cret@cert.org

Buffer Overflow Stack Overflow Red Hat Libtasn1 Suse

7.5

CVSS 3.1

CVSS VectorNVD

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

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

DescriptionNVD

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.

AnalysisAI

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 ContextAI

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.

RemediationAI

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.