Memory leak in Qt - CVE-2020-13962
Published: March 6, 2026
Vulnerability identifier: #VU123611
CSH Severity: Medium
CVSS v4.0: 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
Vendor: Trolltech
Affected software:
Qt
Qt
Detailed vulnerability 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.
How to mitigate CVE-2020-13962
Install updates from vendor's website.