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Fencer Vulns
high 7.5

CVE-2016-7478 in the critical feed json

Zend/zend_exceptions.c in PHP, possibly 5.x before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (infi…

published 2017-01-11 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-8331

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
42.4%
EPSS 42.4% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

Zend/zend_exceptions.c in PHP, possibly 5.x before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (infinite loop) via a crafted Exception object in serialized data, a related issue to CVE-2015-8876.

Patch / fix

  • php5 Ubuntu 14.04 LTS 5.5.9+dfsg-1ubuntu4.21

ubuntu advisories UBUNTU-CVE-2016-7478

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • php53 SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +6 more 5.3.17-101.1
  • php5 SLE Software Development Kit 12 SP2, SLE Software Development Kit 12 SP1, SLE Module for Web and Scripting 12 5.5.14-96.1
  • php7 SLE Software Development Kit 12 SP2, SLE Software Development Kit 12 SP1, SLE Module for Web and Scripting 12 7.0.7-35.1

suse advisories SUSE-SU-2017:0568-1SUSE-SU-2017:0556-1SUSE-SU-2017:0534-1

  • php Arch Linux 7.0.13-1

arch linux advisories AVG-58

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-2016-7478 updated cvss 7.5

php: Unserialize Exception object can lead to infinite loop

  • 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 rh-php56-php, rh-php70-php, rh-php56-php-gd, rh-php70-php-gd, rh-php56-php-cli, rh-php56-php-dba, +52 more
    affected: no fix planned “Will not fix”

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

Exploit prediction

42.40% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.php.net https://bugs.php.net/bug.php?id=73093 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a PHP before 5.6.28

Classification

Technology feeds

References

Sources

Fencer Vulns 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.