CVE-2025-13151

CVE-2025-13151

HIGH
7.5
CVSS Score
Published: January 7, 2026 at 09:14 PM UTC
Updated: June 17, 2026 at 08:33 AM UTC
2 products affected across 2 vendorsLIBTASN1LIBTASN1

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

Product
Source: cverecord
https://gitlab.com/gnutls/libtasn1
Mailing ListPatch
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/01/08/5
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.kb.cert.org/vuls/id/271649

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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