CVE-2023-3439

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 26.4% of scored records. A rank, not a probability.

NVD base score

4.7 (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:H

NVD analysis status

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

Red Hat severity

Moderate. 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

2023-06-28 00:00Z3 YR AGO

Last updated

2025-03-10 21:08Z1 YR AGO

Reserved

2023-06-28

Assigning CNA

fedora

Record state

PUBLISHED

Severity

Medium (CVSS 4.7)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

7be213db0da39758b8b18f77ff0ab9268ecee0afb23b8b99c60e42900cb2b557

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2217915
• github.comhttps://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269
• www.openwall.com[oss-security] 20230702 CVE-2023-3439: Linux MCTP use-after-free in mctp_sendmsghttp://www.openwall.com/lists/oss-security/2023/07/02/1mailing-list