CVE-2007-4657: n/a vulnerability

CVE-2007-4657: Multiple integer overflows in PHP 4 before 4.4.8, and PHP 5 before 5.2.4, allow remote attackers to obtain...

Multiple integer overflows in PHP 4 before 4.4.8, and PHP 5 before 5.2.4, allow remote attackers to obtain sensitive information (memory contents) or cause a denial of service (thread crash) via a large len value to the (1) strspn or (2) strcspn function, which triggers an out-of-bounds read. NOTE: this affects different product versions than CVE-2007-3996.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 15:01 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old PHP vulnerability affecting PHP 4 before 4.4.8 and PHP 5 before 5.2.4. A remote attacker could potentially make PHP disclose memory contents or crash a thread. The main business risk is unmanaged legacy PHP on internet-facing systems. Exposure is most likely in legacy applications or appliances still using PHP 4 before 4.4.8 or PHP 5 before 5.2.4, including older vendor or distribution packages. Prioritize remediation where legacy PHP is internet-facing or handles sensitive data. This is not flagged as actively exploited in the supplied sources, but affected versions are obsolete and should not remain in production. Mitigation focus: Inventory PHP runtime versions across servers, containers, and appliances.; Upgrade PHP to 4.4.8, 5.2.4, or a supported modern release.; Check distribution advisories for backported fixes before relying on upstream version strings..

Prepared: Jun 29, 2026, 03:52 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 4, 2007, 22:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
php-strcspn-overflow(36388)CVE reference · vdb-entry, x_refsource_XF
https://launchpad.net/bugs/173043CVE reference · x_refsource_CONFIRM
USN-549-1CVE reference · vendor-advisory, x_refsource_UBUNTU
https://issues.rpath.com/browse/RPL-1693CVE reference · x_refsource_CONFIRM
https://issues.rpath.com/browse/RPL-1702CVE reference · x_refsource_CONFIRM
php-strcspn-strspn-unspecified(39399)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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