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CVE-2015-8617

49
FAUCET Score

CVE-2015-8617 is a critical format string vulnerability in the zend_throw_or_error function of PHP 7.x before version 7.0.1. This flaw allows remote attackers to execute arbitrary code by injecting format string specifiers into a string misused as a class name, leading to incorrect error handling. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog or having Metasploit/Nuclei exploits, an ExploitDB entry (EDB-39082) exists, indicating public exploit code. Despite its severity, there is minimal community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
7.0.1CPE matchmatch criteria
cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
23.87%
Probability of exploitation in next 30 days
EPSS Percentile
97.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-39082 · Dec 23, 2015
This CVE's current EPSS score of 0.2387 is in the 94th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2015-8617Important

php: Format string vulnerability in class name error message

Dec 12, 2015

References

php.net / ChangeLog-7.php
Vendor Advisory
bugs.php.net / bug.php
Exploit
github.com / php/php-src/commit/b101a6bbd4f2181c360bd38e7683df4a03cba83e
securitytracker.com / id/1034543