CVE-2026-18203

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited 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

0.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 23.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-08-07.

Red Hat severity

Moderate. 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

2026-07-31 07:08Z3 MO AGO

Last updated

2026-08-31 15:01Z1 MO AGO

Reserved

2026-07-29

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

• CWE-863Incorrect AuthorizationClass

Data version

5.2

Document digest

b910d42de732bcf4ce6e15ac8f9011e246c2e48f27facb8ab7c65a14f8391e23

• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-18203vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2508291https://bugzilla.redhat.com/show_bug.cgi?id=2508291issue-trackingx_refsource_REDHAT