CVE-2026-78409

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• 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

Not scored by EPSS

EPSS percentile

Not scored by EPSS

NVD base score

7.0 (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:H/I:H/A:H

NVD analysis status

Received. NVD last modified this record on 2026-09-02.

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

2026-09-02 15:11Z13 HR AGO

Last updated

2026-09-02 15:53Z13 HR AGO

Reserved

2026-08-24

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 7.0)

CNA CVSS vector

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

Weaknesses

• CWE-59Improper Link Resolution Before File Access ('Link Following')Base

Data version

5.2

Document digest

34913a6e9bbaa6d84a570a2d7a696f98fd3c79c2b0b99cd2a1cf9b0506baed90

• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-78409vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2522607https://bugzilla.redhat.com/show_bug.cgi?id=2522607issue-trackingx_refsource_REDHAT
• github.comhttps://github.com/util-linux/util-linux/security/advisories/GHSA-8f2p-47x3-43mv