CVE-2016-7479: php Use After Free
Vulnerability summary
CVE-2016-7479 is a critical (CVSS 9.8) Use After Free vulnerability in php. EPSS estimates a 41.67% chance of exploitation in the next 30 days, higher than 98.6% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 3Timeline
- 12-01-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
41.67%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
No change 0.00 pp
From 41.67% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (blog.checkpoint.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu2 products
- php5< 5.5.9+dfsg-1ubuntu4.21
- php7.0< 7.0.15-0ubuntu0.16.04.2
Php1 product
- phpEOL7.0.0 | 7.0.1 | 7.0.2 | 7.0.3 | 7.0.4 | 7.0.5 | 7.0.6 | 7.0.7 | 7.0.8 | 7.0.9 | 7.0.10 | 7.0.11 | 7.0.12 | 7.0.14 | 7.1.0
2 vendors · 3 products
References
12 links- blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdfX Refsource MISCExploitTechnical DescriptionThird Party AdvisoryREPORT
- security.netapp.com/advisory/ntap-20180112-0001/X Refsource CONFIRM