CVE-2026-40683

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

0.33% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 26.8% of scored records. A rank, not a probability.

NVD base score

7.7 (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:L/I:L/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-08-05.

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

2026-04-14 20:05Z6 MO AGO

Last updated

2026-08-05 18:32Z2 MO AGO

Reserved

2026-04-14

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.7)

CNA CVSS vector

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

Weaknesses

• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base

Data version

5.2

Document digest

0739594bdc3ffd5e58482ae8f954ca26347fe76902ff42f453d119c347ce53b9

• bugs.launchpad.nethttps://bugs.launchpad.net/keystone/+bug/2121152
• bugs.launchpad.nethttps://bugs.launchpad.net/keystone/+bug/2141713
• review.opendev.orghttps://review.opendev.org/958205
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2026/04/14/9
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/08/05/17