CVE-2018-19396
ext/standard/var_unserializer.c in PHP 5.x through 7.1.24 allows attackers to cause a denial of service (application crash) via an unserialize call for the com, dotnet, or variant class.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
ext/standard/var_unserializer.c in PHP 5.x through 7.1.24 allows attackers to cause a denial of service (application crash) via an unserialize call for the com, dotnet, or variant class.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.58% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- php/php
- Source
- cve@mitre.org
EPSS 4.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/105989Third Party Advisory, VDB Entry
- https://bugs.php.net/bug.php?id=77177Exploit, Issue Tracking, Mailing List, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20181221-0005/Third Party Advisory
- http://www.securityfocus.com/bid/105989Third Party Advisory, VDB Entry
- https://bugs.php.net/bug.php?id=77177Exploit, Issue Tracking, Mailing List, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20181221-0005/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.