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Vulnerability record · CVE-2016-6295 · published 25 July 2016

CVE-2016-6295: Php use after free vulnerability

Php · Php

ext/snmp/snmp.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly have unspecified other impact via crafted serialized data, a related issue to CVE-2016-5773.

9.8 CVSS 3.0 Critical EPSS 5.4% · top 7.6% CWE-416 · Use after free
9.8CVSS 3.0 base score, v2 7.5
5.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
24References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

ext/snmp/snmp.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly have unspecified other impact via crafted serialized data, a related issue to CVE-2016-5773.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=cab1c3b3708eead315e033359d07049b23b147a3
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://openwall.com/lists/oss-security/2016/07/24/2 Mailing ListPatch
http://php.net/ChangeLog-5.php Release Notes
http://php.net/ChangeLog-7.php Release Notes
http://rhn.redhat.com/errata/RHSA-2016-2750.html
http://www.debian.org/security/2016/dsa-3631
http://www.securityfocus.com/bid/92094 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036430
https://bugs.php.net/72479 ExploitIssue TrackingPatchThird Party Advisory
https://security.gentoo.org/glsa/201611-22
https://support.apple.com/HT207170
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=cab1c3b3708eead315e033359d07049b23b147a3
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://openwall.com/lists/oss-security/2016/07/24/2 Mailing ListPatch
http://php.net/ChangeLog-5.php Release Notes
http://php.net/ChangeLog-7.php Release Notes
http://rhn.redhat.com/errata/RHSA-2016-2750.html
http://www.debian.org/security/2016/dsa-3631
http://www.securityfocus.com/bid/92094 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036430
https://bugs.php.net/72479 ExploitIssue TrackingPatchThird Party Advisory
https://security.gentoo.org/glsa/201611-22
https://support.apple.com/HT207170

Track CVE-2016-6295 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-6295), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.