CVE-2026-66781

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

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 18.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-03.

Red Hat severity

Important. 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

2026-09-03 04:41Z1 DAY AGO

Reserved

2026-07-27

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 5.4)

CNA CVSS vector

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

Weaknesses

• CWE-749Exposed Dangerous Method or FunctionBase

Data version

5.2

Document digest

4ade62b9c0bb98c1b01b64f97980e20d99d9d2b3f5f727377dc4c6501b2414be

• access.redhat.comRHSA-2026:60386https://access.redhat.com/errata/RHSA-2026:60386vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:60387https://access.redhat.com/errata/RHSA-2026:60387vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:60388https://access.redhat.com/errata/RHSA-2026:60388vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:60389https://access.redhat.com/errata/RHSA-2026:60389vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:60390https://access.redhat.com/errata/RHSA-2026:60390vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:60391https://access.redhat.com/errata/RHSA-2026:60391vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:63016https://access.redhat.com/errata/RHSA-2026:63016vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-66781vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2507526https://bugzilla.redhat.com/show_bug.cgi?id=2507526issue-trackingx_refsource_REDHAT