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CVE-2017-12933
The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is…
Critical9.8EPSS 6.9%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 6.9% · top 5.9% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
n/a
- affected n/a
References (9)
- RHSA-2018:1296 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://php.net/ChangeLog-5.php (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugs.php.net/bug.php?id=74111 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4081 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- DSA-4080 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-3566-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://php.net/ChangeLog-7.php (opens in a new tab)x_refsource_CONFIRMx_transferred
- 99490 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- USN-3566-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_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)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2017-12933)Record last updated .