CVE-2009-2700: Qt

Medium severity, CVSS 4.3. EPSS: 0.9% chance of exploitation in the next 30 days.

src/network/ssl/qsslcertificate.cpp in Nokia Trolltech Qt 4.x does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Affected products

• Qt Qt: version 4.0.0 only; version 4.0.1 only; version 4.1.0 only; version 4.1.1 only; version 4.1.2 only; version 4.1.3 only; …

Published 2009-09-02. Last modified 2026-06-16.