CVE-2016-5769

critical
Published 2016-08-07 · Modified 2026-05-06
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2
7.5
VIR risk
9.8

Description

Multiple integer overflows in mcrypt.c in the mcrypt extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 allow remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted length value, related to the (1) mcrypt_generic and (2) mdecrypt_generic functions.

Predictions

Exploit likelihood
97%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2016-5769.html

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://bugs.php.net/bug.php?id=72455

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://www.openwall.com/lists/oss-security/2016/06/23/4

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://php.net/ChangeLog-5.php

OS impact

OSVersionStatusFixed in
suse slesaffected

Application impact

VendorProductVersionsFixed
php phpphp{"endIncluding":"5.5.36"}
php phpphp5.6.0
php phpphp5.6.1
php phpphp5.6.2
php phpphp5.6.3
php phpphp5.6.4
php phpphp5.6.5
php phpphp5.6.6
php phpphp5.6.7
php phpphp5.6.8
php phpphp5.6.9
php phpphp5.6.10
php phpphp5.6.11
php phpphp5.6.12
php phpphp5.6.13
php phpphp5.6.14
php phpphp5.6.15
php phpphp5.6.16
php phpphp5.6.17
php phpphp5.6.18
php phpphp5.6.19
php phpphp5.6.20
php phpphp5.6.21
php phpphp5.6.22
php phpphp7.0.0
php phpphp7.0.1
php phpphp7.0.2
php phpphp7.0.3
php phpphp7.0.4
php phpphp7.0.5
php phpphp7.0.6
php phpphp7.0.7

References

CWEs

CWE-190

Verify integrity in audit chain (admin only). AS-IS.