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Fencer Vulns
high 7.8

CVE-2007-1649 json

PHP 5.2.1 allows context-dependent attackers to read portions of heap memory by executing certain scripts with a serialized data input stri…

published 2007-03-24 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-1643

cvss
7.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.5%
EPSS 7.5% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

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.

Timeline

  1. First public exploit (EDB-3559)
  2. Published

Exploit prediction

7.49% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-3559 PHP 5.2.1 - 'Unserialize()' Local Information Leak local, 2007-03-23
  • php-security.org http://www.php-security.org/MOPB/MOPB-29-2007.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:C/I:N/A:N

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.