How severe is CVE-2007-4660?

CVE-2007-4660 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2007-4660 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4660?

CVE-2007-4660 affects Php. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-4660?

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-2007-4660 published?

CVE-2007-4660 was published on 2007-09-04 and last updated on 2026-06-16.

CVE-2007-4660

CVE-2007-4660 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-399.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Php
Published: 2007-09-04
Last modified: 2026-06-16

Description

Unspecified vulnerability in the chunk_split function in PHP before 5.2.4 has unknown impact and attack vectors, related to an incorrect size calculation.

Frequently asked questions

What is CVE-2007-4660?: Unspecified vulnerability in the chunk_split function in PHP before 5.2.4 has unknown impact and attack vectors, related to an incorrect size calculation.
How severe is CVE-2007-4660?: CVE-2007-4660 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2007-4660 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4660?: CVE-2007-4660 affects Php. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-4660?: 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-2007-4660 published?: CVE-2007-4660 was published on 2007-09-04 and last updated on 2026-06-16.

References

Affected products (1)

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

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Browse all CWE-399 (Resource Management Errors) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

222.99.52.202 (ipv4-addr)
90.160.135.217 (ipv4-addr)
62.36.19.42 (ipv4-addr)
62.36.19.41 (ipv4-addr)