CVE-2023-4001

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

0.54% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 43.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. 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

2024-01-15 11:10Z2 YR AGO

Last updated

2025-11-20 19:52Z9 MO AGO

Reserved

2023-07-28

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 6.8)

CNA CVSS vector

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

Weaknesses

• CWE-290Authentication Bypass by SpoofingBase

Data version

5.2

Document digest

75aa4ef8e24b607c98880b82a2e731225af179a5f53ef13419fd829fda55601e

• access.redhat.comRHSA-2024:0437https://access.redhat.com/errata/RHSA-2024:0437vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:0456https://access.redhat.com/errata/RHSA-2024:0456vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:0468https://access.redhat.com/errata/RHSA-2024:0468vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-4001vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2224951https://bugzilla.redhat.com/show_bug.cgi?id=2224951issue-trackingx_refsource_REDHAT
• dfir.ruhttps://dfir.ru/2024/01/15/cve-2023-4001-a-vulnerability-in-the-downstream-grub-boot-manager/
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2024/01/15/3
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3OBADMKHQLJOBA32Q7XPNSYMVHVAFDCB/
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHLZQ47HM64NDOHMHYO7VIJFYD5ZPPYN/
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20240216-0006/