#VU123611 Memory leak in Qt - CVE-2020-13962

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Main Vulnerability Database Vulnerabilities #VU123611

#VU123611 Memory leak in Qt - CVE-2020-13962

Published: March 6, 2026


Vulnerability identifier: #VU123611
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-13962
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Qt
Software vendor:
Trolltech

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak when handling TLS connections. A remote attacker can force the application to leak random memory parts to unrelated TLS sessions and cause a denial of service to QSslSocket users.


Remediation

Install updates from vendor's website.

External links