Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2015-8994

20
FAUCET Score

CVE-2015-8994 is a privilege escalation vulnerability affecting PHP 5.x and 7.x when using apache2handler/mod_php or php-fpm with OpCache enabled. It allows a low-privileged attacker to bypass file permissions and access or execute other users' PHP scripts by exploiting shared memory in common hosting configurations. This vulnerability has a CVSS v3.1 score of 7.5 (HIGH), indicating high impact on confidentiality, integrity, and availability, with high attack complexity. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0.0, <= 5.6.29CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.14CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.94%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0294 is in the 82nd percentile among its peer group of 1,162 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-php56-php
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-php70-php

Vendor Advisories (1)

redhatCVE-2015-8994Low

php: Zend OPCache code permission/sensitive data protection issues

Jun 19, 2014

References

marc.info
Mailing List
marc.info
Mailing List
openwall.com / lists/oss-security/2017/02/28/1
Mailing List
bugs.php.net / bug.php
ExploitIssue Tracking
seclists.org / oss-sec/2016/q4/343
Mailing ListThird Party Advisory
seclists.org / oss-sec/2017/q1/520
Mailing ListThird Party Advisory
ma.ttias.be / a-better-way-to-run-php-fpm
ExploitTechnical DescriptionThird Party Advisory