CVE-2026-83596

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 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

0.32% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 25.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-29.

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

2026-08-31 20:46Z1 MO AGO

Last updated

2026-10-29 19:34Z1 HR AGO

Reserved

2026-08-31

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.2

Document digest

e1d0684db807baa0e2983af6d5ebed30b9d28467048078ef70d6efb18b719549

• access.redhat.comRHSA-2026:69098https://access.redhat.com/errata/RHSA-2026:69098vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:74084https://access.redhat.com/errata/RHSA-2026:74084vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:89821https://access.redhat.com/errata/RHSA-2026:89821vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:89822https://access.redhat.com/errata/RHSA-2026:89822vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:91631https://access.redhat.com/errata/RHSA-2026:91631vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:92216https://access.redhat.com/errata/RHSA-2026:92216vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2026:92339https://access.redhat.com/errata/RHSA-2026:92339vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-83596vdb-entryx_refsource_REDHAT
• bugs.webkit.orghttps://bugs.webkit.org/show_bug.cgi?id=322969
• bugzilla.redhat.comRHBZ#2526490https://bugzilla.redhat.com/show_bug.cgi?id=2526490issue-trackingx_refsource_REDHAT