CVE-2017-12934

high
Published 2017-08-18 ยท Modified 2026-05-13
CVSS v3
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
7.5

Description

ext/standard/var_unserializer.re in PHP 7.0.x before 7.0.21 and 7.1.x before 7.1.7 is prone to a heap use after free while unserializing untrusted data, related to the zval_get_type function in Zend/zend_types.h. Exploitation of this issue can have an unspecified impact on the integrity of PHP.

Predictions

Exploit likelihood
83%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OSVersionStatusFixed in
suse slesaffected

Application impact

VendorProductVersionsFixed
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
php phpphp7.0.8
php phpphp7.0.9
php phpphp7.0.10
php phpphp7.0.11
php phpphp7.0.12
php phpphp7.0.13
php phpphp7.0.14
php phpphp7.0.15
php phpphp7.0.16
php phpphp7.0.17
php phpphp7.0.18
php phpphp7.0.19
php phpphp7.0.20
php phpphp7.1.0
php phpphp7.1.1
php phpphp7.1.2
php phpphp7.1.3
php phpphp7.1.4
php phpphp7.1.5
php phpphp7.1.6

References

CWEs

CWE-416

Community-verified mitigations for this CVE will appear above when contributors publish them.

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