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Fencer Vulns
medium 4.3

CVE-2007-0242 json

The UTF-8 decoder in codecs/qutfcodec.cpp in Qt 3.3.8 and 4.2.3 does not reject long UTF-8 sequences as required by the standard, which all…

published 2007-04-03 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-0244

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

The UTF-8 decoder in codecs/qutfcodec.cpp in Qt 3.3.8 and 4.2.3 does not reject long UTF-8 sequences as required by the standard, which allows remote attackers to conduct cross-site scripting (XSS) and directory traversal attacks via long sequences that decode to dangerous metacharacters.

Patch / fix

  • qt4 RHEL 5 4.2.1-1.el5_7.1
  • qt4-odbc RHEL 5 4.2.1-1.el5_7.1
  • qt4-mysql RHEL 5 4.2.1-1.el5_7.1
  • qt4-sqlite RHEL 5 4.2.1-1.el5_7.1
  • qt4-postgresql RHEL 5 4.2.1-1.el5_7.1
  • kdelibs RHEL 4 6:3.3.1-9.el4
  • kdelibs RHEL 5 6:3.5.4-13.el5
  • kdelibs-apidocs RHEL 5 6:3.5.4-13.el5

red hat advisories RHSA-2011:1324RHSA-2007:0909RHSA-2007:0883

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-0242 updated cvss 4.3

QT UTF8 improper character expansion

  • Red Hat Desktop version 3 qt 3.1.2-17.RHEL3, qt-ODBC 3.1.2-17.RHEL3, qt-MySQL 3.1.2-17.RHEL3, qt-config 3.1.2-17.RHEL3, qt-designer 3.1.2-17.RHEL3 Red Hat Enterprise Linux (v. 5 server) qt 3.3.6-23.el5, qt4 4.2.1-1.el5_7.1, kdelibs 3.5.4-13.el5, qt-ODBC 3.3.6-23.el5, qt-MySQL 3.3.6-23.el5, qt-config 3.3.6-23.el5, +7 more Red Hat Enterprise Linux AS (Advanced Server) version 2.1 qt 2.3.1-14.EL2, qt-Xt 2.3.1-14.EL2, qt-designer 2.3.1-14.EL2 Red Hat Enterprise Linux AS version 3 qt 3.1.2-17.RHEL3, qt-ODBC 3.1.2-17.RHEL3, qt-MySQL 3.1.2-17.RHEL3, qt-config 3.1.2-17.RHEL3, qt-designer 3.1.2-17.RHEL3 Red Hat Enterprise Linux AS version 4 qt 3.3.3-13.RHEL4, kdelibs 3.3.1-9.el4, qt-ODBC 3.3.3-13.RHEL4, qt-MySQL 3.3.3-13.RHEL4, qt-config 3.3.3-13.RHEL4, qt-designer 3.3.3-13.RHEL4, +1 more Red Hat Enterprise Linux Desktop (v. 5 client) qt 3.3.6-23.el5, qt4 4.2.1-1.el5_7.1, kdelibs 3.5.4-13.el5, qt-ODBC 3.3.6-23.el5, qt-MySQL 3.3.6-23.el5, qt-config 3.3.6-23.el5, +7 more
    +9 more products
    Red Hat Enterprise Linux Desktop version 4 qt 3.3.3-13.RHEL4, kdelibs 3.3.1-9.el4, qt-ODBC 3.3.3-13.RHEL4, qt-MySQL 3.3.3-13.RHEL4, qt-config 3.3.3-13.RHEL4, qt-designer 3.3.3-13.RHEL4, +1 more Red Hat Enterprise Linux Desktop Workstation (v. 5 client) qt 3.3.6-23.el5, kdelibs 3.5.4-13.el5, qt-ODBC 3.3.6-23.el5, qt-MySQL 3.3.6-23.el5, qt-config 3.3.6-23.el5, qt-designer 3.3.6-23.el5, +2 more Red Hat Enterprise Linux ES version 2.1 qt 2.3.1-14.EL2, qt-Xt 2.3.1-14.EL2, qt-designer 2.3.1-14.EL2 Red Hat Enterprise Linux ES version 3 qt 3.1.2-17.RHEL3, qt-ODBC 3.1.2-17.RHEL3, qt-MySQL 3.1.2-17.RHEL3, qt-config 3.1.2-17.RHEL3, qt-designer 3.1.2-17.RHEL3 Red Hat Enterprise Linux ES version 4 qt 3.3.3-13.RHEL4, kdelibs 3.3.1-9.el4, qt-ODBC 3.3.3-13.RHEL4, qt-MySQL 3.3.3-13.RHEL4, qt-config 3.3.3-13.RHEL4, qt-designer 3.3.3-13.RHEL4, +1 more Red Hat Enterprise Linux WS version 2.1 qt 2.3.1-14.EL2, qt-Xt 2.3.1-14.EL2, qt-designer 2.3.1-14.EL2 Red Hat Enterprise Linux WS version 3 qt 3.1.2-17.RHEL3, qt-ODBC 3.1.2-17.RHEL3, qt-MySQL 3.1.2-17.RHEL3, qt-config 3.1.2-17.RHEL3, qt-designer 3.1.2-17.RHEL3 Red Hat Enterprise Linux WS version 4 qt 3.3.3-13.RHEL4, kdelibs 3.3.1-9.el4, qt-ODBC 3.3.3-13.RHEL4, qt-MySQL 3.3.3-13.RHEL4, qt-config 3.3.3-13.RHEL4, qt-designer 3.3.3-13.RHEL4, +1 more Red Hat Linux Advanced Workstation 2.1 qt 2.3.1-14.EL2, qt-Xt 2.3.1-14.EL2, qt-designer 2.3.1-14.EL2
    fixed: vendor fix RHSA-2007:0883
  • Red Hat RHEL Desktop Workstation (v. 5 client) qt4 4.2.1-1.el5_7.1, qt4-odbc 4.2.1-1.el5_7.1, qt4-mysql 4.2.1-1.el5_7.1, qt4-sqlite 4.2.1-1.el5_7.1, qt4-postgresql 4.2.1-1.el5_7.1
    fixed: vendor fix RHSA-2011:1324

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.12% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.