CVE-2023-40661

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 65.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:P/AC:L/PR:L/UI:R/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

2023-11-06 16:58Z2 YR AGO

Last updated

2025-11-06 22:59Z10 MO AGO

Reserved

2023-08-18

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 5.4)

CNA CVSS vector

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

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.2

Document digest

09192e64718d257df36866a23a9c7a18882aba79239e5aaedad02793f2334b10

• access.redhat.comRHSA-2023:7876https://access.redhat.com/errata/RHSA-2023:7876vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2023:7879https://access.redhat.com/errata/RHSA-2023:7879vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-40661vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2240913https://bugzilla.redhat.com/show_bug.cgi?id=2240913issue-trackingx_refsource_REDHAT
• github.comhttps://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651
• github.comhttps://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1
• github.comhttps://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/12/13/3
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/11/msg00024.html
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/12/msg00026.html