CVE-2007-1453

7.5 HIGH 10% exploit odds No fix listed Code execution Web app

What it is

Buffer underflow in the PHP_FILTER_TRIM_DEFAULT macro in the filtering extension (ext/filter) in PHP 5.2.0 allows context-dependent attackers to execute arbitrary code by calling filter_var with certain modes such as FILTER_VALIDATE_INT, which causes filter to write a null byte in whitespace that precedes the buffer.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 9.7% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2007-03-14 18:19 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:37 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 9.7% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2007-03-14 18:19 UTC
Last modified: 2026-06-16 22:37 UTC
Exploit probability: 9.7% · EPSS, next 30 days
Record status: Modified

Affected

PHP 5.2.0

Attack profile CVSS 2.0 · 7.5

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: Partial
Integrity: Partial
Availability: Partial

Raw vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Is it in your code?

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References

NVD record · CVE.org record