CVE-2007-1649

7.8 HIGH 7% exploit odds No fix listed Other Web app

What it is

PHP 5.2.1 allows context-dependent attackers to read portions of heap memory by executing certain scripts with a serialized data input string beginning with S:, which does not properly track the number of input bytes being processed.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure.
Exploit odds: 7.5% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2007-03-24 00:19 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:38 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 7.5% in the next 30 days (EPSS).
Severity: 7.8 HIGH (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2007-03-24 00:19 UTC
Last modified: 2026-06-16 22:38 UTC
Exploit probability: 7.5% · EPSS, next 30 days
Record status: Modified

Affected

PHP 5.2.1

Attack profile CVSS 2.0 · 7.8

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

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2007-1649.md and follow it. Check whether this project is affected by CVE-2007-1649. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record