How severe is CVE-2007-3294?

CVE-2007-3294 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2007-3294 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-3294?

CVE-2007-3294 affects Php. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-3294?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-3294 published?

CVE-2007-3294 was published on 2007-06-20 and last updated on 2026-06-16.

CVE-2007-3294

CVE-2007-3294 is a high-severity vulnerability in Php with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Php
Published: 2007-06-20
Last modified: 2026-06-16

Description

Multiple buffer overflows in libtidy, as used in the Tidy extension for PHP 5.2.3 and possibly other products, allow context-dependent attackers to execute arbitrary code via (1) a long second argument to the tidy_parse_string function or (2) an unspecified vector to the tidy_repair_string function. NOTE: this might only be an issue in environments where vsnprintf is implemented as a wrapper for vsprintf.

Frequently asked questions

What is CVE-2007-3294?: Multiple buffer overflows in libtidy, as used in the Tidy extension for PHP 5.2.3 and possibly other products, allow context-dependent attackers to execute arbitrary code via (1) a long second argument to the tidy_parse_string function or (2) an unspecified vector to the tidy_repair_string function. NOTE: this might only be an issue in environments where vsnprintf is implemented as a wrapper for vsprintf.
How severe is CVE-2007-3294?: CVE-2007-3294 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2007-3294 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3294?: CVE-2007-3294 affects Php. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3294?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-3294 published?: CVE-2007-3294 was published on 2007-06-20 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:php:php:5.2.3:*:*:*:*:*:*:*

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