CVE-2026-15779

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

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 3.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-07-15.

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

2026-07-15 12:33Z3 MO AGO

Last updated

2026-07-15 13:04Z3 MO AGO

Reserved

2026-07-14

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 6.1)

CNA CVSS vector

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

Weaknesses

• CWE-732Incorrect Permission Assignment for Critical ResourceClass

Data version

5.2

Document digest

c594f2b90fa2d4b05b49dfe426c891e5be2680f828ed5ae80912b9868c210b2f

• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-15779vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2499991https://bugzilla.redhat.com/show_bug.cgi?id=2499991issue-trackingx_refsource_REDHAT
• gitlab.comhttps://gitlab.com/samba-team/samba/-/blob/samba-4.19.4/nsswitch/pam_winbind.c
• gitlab.comhttps://gitlab.com/samba-team/samba/-/blob/samba-4.23.5/nsswitch/pam_winbind.c#L1622
• gitlab.comhttps://gitlab.com/samba-team/samba/-/blob/samba-4.24.3/nsswitch/pam_winbind.c#L1590