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Fencer Intel
critical 9.8

CVE-2015-8617 in the critical feed json

Format string vulnerability in the zend_throw_or_error function in Zend/zend_execute_API.c in PHP 7.x before 7.0.1 allows remote attackers…

published 2016-01-19 10 y ago modified 2026-06-17 4 mo ago also EUVD-2015-8494

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
22.8%
EPSS 22.8% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

Format string vulnerability in the zend_throw_or_error function in Zend/zend_execute_API.c in PHP 7.x before 7.0.1 allows remote attackers to execute arbitrary code via format string specifiers in a string that is misused as a class name, leading to incorrect error handling.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-8617 updated cvss 6.8

php: Format string vulnerability in class name error message

  • Red Hat Enterprise Linux 5 php, php53 Red Hat Enterprise Linux 6 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +20 more Red Hat Enterprise Linux 7 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +18 more Red Hat OpenShift Enterprise 2 php Red Hat Software Collections php54-php, php55-php, php54-php-gd, php55-php-gd, rh-php56-php, php54-php-cli, +72 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-39082)
  2. Published

Exploit prediction

22.81% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-39082 PHP 7.0.0 - Format String dos, 2015-12-23
  • bugs.php.net https://bugs.php.net/bug.php?id=71105 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-134 Use of Externally-Controlled Format String
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.