Information Exposure Through Timing Discrepancy in GnuTLS - CVE-2026-5419

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Main Vulnerability Database Vulnerabilities #VU128580

Information Exposure Through Timing Discrepancy in GnuTLS - CVE-2026-5419

Published: April 30, 2026


Vulnerability identifier: #VU128580
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-5419
CWE-ID: CWE-208
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
GnuTLS
Software vendor:
GnuTLS

Description

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to observable timing discrepancy in PKCS#7 padding check during decryption when processing ciphertext. A remote attacker can send specially crafted ciphertext to disclose sensitive information.


Remediation

Install security update from vendor's website.

External links