CVE-2023-6240

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 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

0.97% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 59.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2024-02-04 14:11Z2 YR AGO

Last updated

2025-11-08 07:10Z10 MO AGO

Reserved

2023-11-21

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

• CWE-203Observable DiscrepancyBase

Data version

5.2

Document digest

b25e15d6623ab1129cb6a5be280d0646b90e2dca9b3fbd3ab700013801eb6a0d

• access.redhat.comRHSA-2024:1881https://access.redhat.com/errata/RHSA-2024:1881vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:1882https://access.redhat.com/errata/RHSA-2024:1882vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:2758https://access.redhat.com/errata/RHSA-2024:2758vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:3414https://access.redhat.com/errata/RHSA-2024:3414vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:3421https://access.redhat.com/errata/RHSA-2024:3421vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:3618https://access.redhat.com/errata/RHSA-2024:3618vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:3627https://access.redhat.com/errata/RHSA-2024:3627vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-6240vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2250843https://bugzilla.redhat.com/show_bug.cgi?id=2250843issue-trackingx_refsource_REDHAT
• people.redhat.comhttps://people.redhat.com/~hkario/marvin/
• securitypitfalls.wordpress.comhttps://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20240628-0002/