How severe is CVE-2007-4255?

CVE-2007-4255 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2007-4255 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-2007-4255?

CVE-2007-4255 affects Php. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-4255?

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-2007-4255 published?

CVE-2007-4255 was published on 2007-08-08 and last updated on 2026-06-16.

CVE-2007-4255

CVE-2007-4255 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.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Php
Published: 2007-08-08
Last modified: 2026-06-16

Description

Buffer overflow in the mSQL extension in PHP 5.2.3 allows context-dependent attackers to execute arbitrary code via a long first argument to the msql_connect function.

Frequently asked questions

What is CVE-2007-4255?: Buffer overflow in the mSQL extension in PHP 5.2.3 allows context-dependent attackers to execute arbitrary code via a long first argument to the msql_connect function.
How severe is CVE-2007-4255?: CVE-2007-4255 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2007-4255 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-2007-4255?: CVE-2007-4255 affects Php. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-4255?: 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-2007-4255 published?: CVE-2007-4255 was published on 2007-08-08 and last updated on 2026-06-16.

References

Affected products (1)

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

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