How severe is CVE-2007-0242?

CVE-2007-0242 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-0242 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-0242?

CVE-2007-0242 primarily affects Qt. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-0242?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-0242 published?

CVE-2007-0242 was published on 2007-04-03 and last updated on 2026-06-16.

CVE-2007-0242

CVE-2007-0242 is a medium-severity vulnerability in Qt with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Qt
Published: 2007-04-03
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2007-0242?: 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.
How severe is CVE-2007-0242?: CVE-2007-0242 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-0242 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-0242?: CVE-2007-0242 primarily affects Qt. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-0242?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-0242 published?: CVE-2007-0242 was published on 2007-04-03 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:qt:qt:3.3.8:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:4.2.3:*:*:*:*:*:*:*

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