CVE-2007-4137

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-09-18 · updated 2026-06-16
Weakness: CWE-119

Description

Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service (crash) via a crafted Unicode string that triggers a heap-based buffer overflow. NOTE: Qt 4 has the same error in the QUtf8Codec::convertToUnicode function, but it is not exploitable.

Affected products

Trolltech Qt: 3.0, 3.0.3, 3.0.5, 3.1, 3.1.1, 3.1.2 (+17)

References

http://bugs.gentoo.org/show_bug.cgi?id=192472
http://dist.trolltech.com/developer/download/175791_3.diff
http://dist.trolltech.com/developer/download/175791_4.diff
http://fedoranews.org/updates/FEDORA-2007-221.shtml
http://fedoranews.org/updates/FEDORA-2007-703.shtml
http://osvdb.org/39384
http://secunia.com/advisories/26778
http://secunia.com/advisories/26782
http://secunia.com/advisories/26804
http://secunia.com/advisories/26811
http://secunia.com/advisories/26857

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