CVE-2026-18739

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

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

EPSS percentile

Equal to or higher than the score of 3.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-08-31.

Red Hat severity

Low. 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

2026-08-04 05:32Z2 MO AGO

Last updated

2026-08-31 17:19Z1 MO AGO

Reserved

2026-08-03

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Low (CVSS 2.5)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

2b309193df770e7ad08f620bb5b661101d81d2a88503d2ed71d42e4878405323

• access.redhat.comRHSA-2026:56984https://access.redhat.com/errata/RHSA-2026:56984vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-18739vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2510737https://bugzilla.redhat.com/show_bug.cgi?id=2510737issue-trackingx_refsource_REDHAT