CVE-2016-6290
9.8
CRITICAL · CVSS 3.0 · EPSS 5.5% (pctl 93)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
ext/session/session.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 does not properly maintain a certain hash data structure, which allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via vectors related to session deserialization.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 5.48% — more likely to be exploited than 93% of all CVEs |
| Weakness | CWE-416 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2016-07-25 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| php | php |
References
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=3798eb6fd5dddb211b01d41495072fd9858d4e32
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- http://openwall.com/lists/oss-security/2016/07/24/2
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3631
- http://www.securityfocus.com/bid/92097
- http://www.securitytracker.com/id/1036430
- https://bugs.php.net/72562
- https://security.gentoo.org/glsa/201611-22
- https://support.apple.com/HT207170
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=3798eb6fd5dddb211b01d41495072fd9858d4e32
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- http://openwall.com/lists/oss-security/2016/07/24/2
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3631
- http://www.securityfocus.com/bid/92097
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