CVE-2026-18963

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

3.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 87.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-08-20.

Red Hat severity

Critical. Red Hat's rating for its own products, not a CVSS rating.

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

2026-08-18 17:05Z17 DAYS AGO

Last updated

2026-08-20 22:25Z15 DAYS AGO

Reserved

2026-08-05

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

• CWE-640Weak Password Recovery Mechanism for Forgotten PasswordBase

Data version

5.2

Document digest

0ddc97950ad7ea7126d58fa27cd3f46ce15d8853e57c09e7c78512208caa5f47

• access.redhat.comRHSA-2026:56519https://access.redhat.com/errata/RHSA-2026:56519vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:56520https://access.redhat.com/errata/RHSA-2026:56520vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:56523https://access.redhat.com/errata/RHSA-2026:56523vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:56524https://access.redhat.com/errata/RHSA-2026:56524vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-18963vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2511595https://bugzilla.redhat.com/show_bug.cgi?id=2511595issue-trackingx_refsource_REDHAT