CVE-2017-18434
cPanel before 64.0.21 allows code execution in the context of the root account via a SET_VHOST_LANG_PACKAGE multilang adminbin call (SEC-237).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
cPanel before 64.0.21 allows code execution in the context of the root account via a SET_VHOST_LANG_PACKAGE multilang adminbin call (SEC-237).
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.46% probability · 39th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- cpanel/cpanel
- Source
- cve@mitre.org
EPSS 0.5% 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
- https://documentation.cpanel.net/display/CL/64+Change+LogRelease Notes, Vendor Advisory
- https://news.cpanel.com/cpanel-tsr-2017-0003-full-disclosure/Vendor Advisory
- https://documentation.cpanel.net/display/CL/64+Change+LogRelease Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.