Qt up to 3.3.8 QTextCodec TSCII encoding out-of-bounds

Summaryinfo

A vulnerability was found in Qt. It has been classified as critical. This affects an unknown function of the component QTextCodec TSCII encoding. The manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2026-107472. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Qt. This issue affects an unknown code block of the component QTextCodec TSCII encoding. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.

The advisory is shared at wiki.qt.io. The identification of this vulnerability is CVE-2026-107472 since 10/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 4.0.0 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Qt

Version

• 0.3.4
• 0.3.5
• 0.3.8
• 0.3.10
• 0.3.11
• 0.3.12
• 0.4.0
• 0.4.1
• 0.4.2
• 0.4.3
• 0.4.4
• 0.4.5
• 0.4.6
• 0.4.7
• 0.5.0
• 0.5.0.4
• 0.5.1
• 0.5.2
• 0.5.3
• 0.5.3.0
• 0.5.3.1
• 0.5.4
• 0.5.5
• 0.5.6
• 0.6.0
• 0.6.0.1
• 0.6.0.2
• 0.6.0.3
• 0.6.0.4
• 0.6.0.5
• 0.6.0.6
• 0.6.0.7
• 0.6.0.8
• 0.6.1
• 0.6.2
• 0.6.3
• 0.6.4rc1
• 0.8.0
• 0.8.1
• 0.8.2
• 0.8.3
• 0.8.4rc1
• 0.10.2
• 0.15.1
• 0.17.1
• 1.0
• 1.3.0
• 1.9.1
• 2.12.3
• 3.0
• 3.0.3
• 3.0.5
• 3.1
• 3.1.1
• 3.1.2
• 3.2.1
• 3.2.3
• 3.3
• 3.3.0
• 3.3.1
• 3.3.2
• 3.3.3
• 3.3.4
• 3.3.5
• 3.3.6
• 3.3.7
• 3.3.8

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion