Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service…

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.

Scores

EPSS (exploitation in 30 days)

2.3% · top 16% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• n/a
• CWE-119 (opens in a new tab)All about CWE-119 and its CVEs

Affected products

• n/a

  • affected n/a

References (35)

• http://bugs.gentoo.org/show_bug.cgi?id=192472 (opens in a new tab)x_refsource_CONFIRMx_transferred
• MDKSA-2007:183 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• SUSE-SR:2007:019 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 26868 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2007-424.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://issues.rpath.com/browse/RPL-1751 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 26811 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:11159 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 27053 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 27996 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 27275 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 27382 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 26857 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://trolltech.com/company/newsroom/announcements/press.2007-09-03.7564032119 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 26778 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=269001 (opens in a new tab)x_refsource_MISCx_transferred
• 26882 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 26987 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• GLSA-200710-28 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• ADV-2007-3144 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• http://dist.trolltech.com/developer/download/175791_4.diff (opens in a new tab)x_refsource_MISCx_transferred
• 39384 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• 26804 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 26782 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://dist.trolltech.com/developer/download/175791_3.diff (opens in a new tab)x_refsource_MISCx_transferred
• FEDORA-2007-703 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• FEDORA-2007-2216 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• GLSA-200712-08 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• 28021 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2007:0883 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 1018688 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• 20071004 FLEA-2007-0059-1 qt qt-tools (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• USN-513-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• 25657 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• DSA-1426 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2007-4137](https://trackcve.app/badge/CVE-2007-4137.svg)](https://trackcve.app/cve/CVE-2007-4137)

Record last updated 7 Aug 2024, 14:46 UTC.