PT-2026-31737 · Unknown · Certfromx509

Stefan0X03 · Published 2026-04-09 · Updated 2026-04-14 · CVE-2026-5447

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions CertFromX509 (affected versions not specified)

Description A heap buffer overflow occurs when converting an X.509 certificate internally due to incorrect size handling of the AuthorityKeyIdentifier extension.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-5447

Affected Products

Certfromx509

References · 10

• https://github.com/wolfSSL/wolfssl/pull/10112 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-5447 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-5447 · Security Note
• https://ubuntu.com/security/CVE-2026-5447 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-5447 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5447 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-5447 · Vendor Advisory
• https://twitter.com/infoflowcloud/status/2042356142416736262 · Twitter Post
• https://twitter.com/CVEnew/status/2042355098878107930 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2044059820626530317 · Twitter Post