CVE-2015-6834

critical

Description

Multiple use-after-free vulnerabilities in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 allow remote attackers to execute arbitrary code via vectors related to (1) the Serializable interface, (2) the SplObjectStorage class, and (3) the SplDoublyLinkedList class, which are mishandled during unserialization.

References

https://security.gentoo.org/glsa/201606-10

https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-6770

https://bugs.php.net/bug.php?id=70366

https://bugs.php.net/bug.php?id=70365

https://bugs.php.net/bug.php?id=70172

http://www.securitytracker.com/id/1033548

http://www.securityfocus.com/bid/76649

http://www.debian.org/security/2015/dsa-3358

http://php.net/ChangeLog-5.php

Details

Source: Mitre, NVD

Published: 2016-05-16

Updated: 2026-05-06

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.46801