CVE-2026-54420

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-06-15. Federal remediation due 2026-06-18.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 71.3% of scored records. A rank, not a probability.

NVD base score

8.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-23.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-14 03:23Z2 MO AGO

Last updated

2026-06-16 03:56Z2 MO AGO

Reserved

2026-06-14

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 8.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses

• CWE-61UNIX Symbolic Link (Symlink) FollowingCompound

Data version

5.2

Document digest

5d7be5ef2dc54b8fc7a799c808d6c11f7df31c56959d6c320a43b2fdcfbf39e4

• www.litespeedtech.comhttps://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel
• blog.litespeedtech.comhttps://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420government-resource