CVE-2026-4747

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

3.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 88.8% 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:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

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

2026-03-26 06:21Z7 MO AGO

Last updated

2026-04-02 03:55Z7 MO AGO

Reserved

2026-03-24

Assigning CNA

freebsd

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-121Stack-based Buffer OverflowVariant

Data version

5.2

Document digest

babae9cc67d33021a9c05f7c6f3f0ae20a85ed1a5da082856233353b56b7d6ea

• security.freebsd.orghttps://security.freebsd.org/advisories/FreeBSD-SA-26:08.rpcsec_gss.ascvendor-advisory
• github.comhttps://github.com/califio/publications/blob/main/MADBugs/CVE-2026-4747/exploit.pyexploit
• github.comhttps://github.com/califio/publications/tree/main/MADBugs/CVE-2026-4747