CVE-2025-13151

EUVD-2025-206262
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 18%
Affected Products (NVD)
VendorProductVersion
gnulibtasn1
4.20.0
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libtasn1-6
bionic
Fixed 4.13-2ubuntu0.1~esm1
released
focal
Fixed 4.16.0-2ubuntu0.1+esm1
released
jammy
Fixed 4.18.0-4ubuntu0.2
released
noble
Fixed 4.19.0-3ubuntu0.24.04.2
released
plucky
Fixed 4.20.0-2ubuntu0.25.04.1
released
questing
Fixed 4.20.0-2ubuntu0.25.10.1
released
trusty
Fixed 3.4-3ubuntu0.6+esm1
released
xenial
Fixed 4.7-3ubuntu0.16.04.3+esm4
released
Common Weakness Enumeration
References
https://gitlab.com/gnutls/libtasn1
https://gitlab.com/gnutls/libtasn1/-/merge_requests/121
http://www.openwall.com/lists/oss-security/2026/01/08/5
https://www.kb.cert.org/vuls/id/271649