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Fencer Vulns
critical 9.8

CVE-2016-7480 in the critical feed json

The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, whi…

published 2017-01-11 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-8333

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
41.6%
EPSS 41.6% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.

Patch / fix

  • php php 7.0.11
  • 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-2017:0534-1

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-2016-7480 updated cvss 8.1

php: Use of uninitialized value in SplObjectStorag::unserialize

  • 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

41.56% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blog.checkpoint.com http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a PHP before 7.0.12

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
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.