Denial of service in Trolltech Qt

1) Resource exhaustion

EUVDB-ID: #VU107430

Risk: Medium

CVSSv4.0: 2.7 [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-2025-30348

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper control of internal resources consumption in QDomNode::save() when parsing XML data. A remote attacker trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Qt: 5.15 - 6.7.2

CPE2.3

• cpe:2.3:a:trolltech:qt:5.15.18:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.2.13:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:trolltech:qt:6.5.8:*:*:*:*:*:*:*

External links

https://codereview.qt-project.org/c/qt/qtbase/+/581442
https://bugreports.qt.io/browse/QTBUG-127549

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.