CVE-2017-1000600
WordPress version <4.9 contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
WordPress version <4.9 contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution. This attack appears to be exploitable via thumbnail upload by an authenticated user and may require additional plugins in order to be exploited however this has not been confirmed at this time. This issue appears to have been partially, but not completely fixed in WordPress 4.9
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.80% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- wordpress/wordpress
- Source
- cve@mitre.org
EPSS 3.8% 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/105305Third Party Advisory, VDB Entry
- https://www.theregister.co.uk/2018/08/20/php_unserialisation_wordpress_vuln/Third Party Advisory
- https://youtu.be/GePBmsNJw6Y?t=1763Third Party Advisory
- http://www.securityfocus.com/bid/105305Third Party Advisory, VDB Entry
- https://www.theregister.co.uk/2018/08/20/php_unserialisation_wordpress_vuln/Third Party Advisory
- https://youtu.be/GePBmsNJw6Y?t=1763Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.