#VU125564 Use-after-free in OpenSSL - CVE-2026-28387

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Main Vulnerability Database Vulnerabilities #VU125564

#VU125564 Use-after-free in OpenSSL - CVE-2026-28387

Published: April 9, 2026


Vulnerability identifier: #VU125564
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-28387
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
OpenSSL
Software vendor:
OpenSSL Software Foundation

Description

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to use-after-free in DANE client code when processing server DANE TLSA records during TLSA-based server authentication. A remote attacker can provide crafted TLSA records to execute arbitrary code.

The issue only affects clients that use both PKIX-TA(0) or PKIX-EE(1) certificate usages together with the DANE-TA(2) certificate usage, and the server must publish a TLSA RRset containing both record types.


Remediation

Install security update from vendor's website.

External links