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CVE-2016-7480
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,…
- 9.8CriticalCVSS base score
- 41.6%Exploitation in 30 daysEPSS · top 1.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By checkpoint
- 4 months later
· 4 months later
Published
- 8 years later
· 8 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 41.6% · top 1.3% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
PHP before 7.0.12
- affected PHP before 7.0.12
References
8
- http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf (opens in a new tab)x_refsource_MISCx_transferred
- https://www.youtube.com/watch?v=LDcaPstAuPk (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.php.net/bug.php?id=73257 (opens in a new tab)x_refsource_MISCx_transferred
- http://php.net/ChangeLog-7.php (opens in a new tab)x_refsource_MISCx_transferred
- 95152 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4 (opens in a new tab)x_refsource_MISCx_transferred
- https://security.netapp.com/advisory/ntap-20180112-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2016-8333 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2016-7480)Record last updated .