VulnerabilityAnalyzed
CVE-2025-13151
Stack-based buffer overflow in libtasn1 version: v4.20.0.
HIGH 7.5EPSS 1.15%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public 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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.15% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- gnu/libtasn1
- Source
- cret@cert.org
References
- https://gitlab.com/gnutls/libtasn1Product
- https://gitlab.com/gnutls/libtasn1/-/merge_requests/121Patch
- http://www.openwall.com/lists/oss-security/2026/01/08/5Mailing List, Patch
- https://www.kb.cert.org/vuls/id/271649Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.