AUGUST 4, 2026
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Case File

CVE-2026-21444

MEDIUM · CVSS 5.5 EPSS 0.07% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-01-02 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.5. It affects OpenSSL. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-21444
Severity
MEDIUM
CVSS
5.5
EPSS
0.07%
OpenSSL

Original NVD Description

libtpms, a library that provides software emulation of a Trusted Platform Module, has a flaw in versions 0.10.0 and 0.10.1. The commonly used integration of libtpms with OpenSSL 3.x contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confidentiality. Version 0.10.2 fixes the issue. No known workarounds are available.

Related CVEs

Other vulnerabilities affecting the same vendor(s)