CVE-2026-18487

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 26.9% 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:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-08-28.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-08-06 16:32Z2 MO AGO

Last updated

2026-08-07 15:39Z2 MO AGO

Reserved

2026-07-31

Assigning CNA

fedora

Record state

PUBLISHED

Severity

Medium (CVSS 5.4)

CNA CVSS vector

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

Weaknesses

• CWE-451User Interface (UI) Misrepresentation of Critical InformationClass

Data version

5.2

Document digest

6a5ffd201e41cba2fed8f66b77a42b8fdb93386e285b5dbe4ea12067a14ced9e

• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-18487vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2509570https://bugzilla.redhat.com/show_bug.cgi?id=2509570issue-trackingx_refsource_REDHAT
• gitlab.gnome.orghttps://gitlab.gnome.org/GNOME/epiphany/-/commit/0dde1d369458ac5c44b74b5ad3c433f825f6f8af
• gitlab.gnome.orghttps://gitlab.gnome.org/GNOME/epiphany/-/work_items/2897