CVE-2013-3735
Status: ModifiedHigh (7.5)—
Severity7.5High · CVSS 3.1
Exploitation probability2.83 %higher than 87% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found
The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly determine whether a parser error occurred, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash) via a crafted function definition, as demonstrated by an attack within a shared web-hosting environment. NOTE: the vendor's http://php.net/security-note.php page says "for critical security situations you should be using OS-level security by running multiple web servers each as their own user id.
CVSS
- Base score
- 7.5
- Version
- 3.1
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days
- 2.83 %
- Percentile among all scored CVEs
- 87
- Score date
- 10/22/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (1)
CWEs
- CWE-20
References
Show 8 references
- https://bugs.php.net/bug.php?id=64660
- https://github.com/php/php-src/blob/php-5.4.16RC1/NEWS
- https://github.com/php/php-src/blob/php-5.5.0RC2/NEWS
- https://github.com/php/php-src/commit/fb58e69a84f4fde603a630d2c9df2fa3be16d846
- https://bugs.php.net/bug.php?id=64660
- https://github.com/php/php-src/blob/php-5.4.16RC1/NEWS
- https://github.com/php/php-src/blob/php-5.5.0RC2/NEWS
- https://github.com/php/php-src/commit/fb58e69a84f4fde603a630d2c9df2fa3be16d846
Raw JSON (NVD)
Show
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