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.
Conclusion & alert: CVE-2015-1351 is rated High Exploit Risk (74.7/100): CVSS High severity, with high exploitation likelihood (EPSS 8.71%, 94th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 12.03% | 8.71% | -3.32% |
| 2 | 2026-05-24 | 19.13% | 12.03% | -7.10% |
| 3 | 2025-12-28 | — | 19.13% | — |
Full EPSS history (23 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2015-1351: 1 GLSA(s) (201606-10), 1 atom(s) (dev-lang/php); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-1351 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2015-1351 |
suse
|
high | CVE-2015-1351 severity important: SUSE including 684 source package names (apache2-mod_php5, apache2-mod_php5-5.5.14-109.63.2, …), 1283 product×package rows across 45 product lines (SLES for SAP Applications 11 SP2, SLES for SAP Applications 11 SP3, … (45 product lines)): Known Not Affected 795, Fixed 488. | https://www.suse.com/security/cve/CVE-2015-1351/ |
ubuntu
|
medium | CVE-2015-1351 medium priority: Ubuntu including 1 source packages (php5), 5 status rows across 5 suites (lucid, precise, trusty, upstream, utopic): not-affected 2, released 2, needs-triage 1. | https://ubuntu.com/security/CVE-2015-1351 |
: CWE-416: Use After Free
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| oracle | secure_backup | <= 12.1.0.1.0 | cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:* |
| apple | mac_os_x | <= 10.6.8 | cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* |
| php | php | < 5.5.24 | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* |
| php | php | >= 5.6.0, < 5.6.8 | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* |
| oracle | linux | 6 | cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:* |
| oracle | linux | 7 | cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:* |
| oracle | solaris | 11.2 | cpe:2.3:o:oracle:solaris:11.2:*:*:*:*:*:*:* |