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CVE-2015-1351

HIGH severity · CVSS 7.5 · Use-after-free
7.5CVSS HIGH

Summary

Use-after-free vulnerability in the _zend_shared_memdup function in zend_shared_alloc.c in the OPcache extension in PHP through 5.6.7 allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors.

Impact & exploitability

Attack vectorNetwork
Attack complexityLow
Privileges required
User interaction
Confidentiality impact
Integrity impact
Availability impact
Exploit probability (EPSS)12%

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products we track (1)

PHP

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html ↗

Last checked: Wed, 10 Jun 2026 22:18:30 UTC