CVE-2023-4535

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

0.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 40.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. 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 16:57Z2 YR AGO

Last updated

2025-11-21 06:36Z9 MO AGO

Reserved

2023-08-25

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 4.5)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

5942f7f6ea8c3a2ff8cef96affb915989a987a7b0c68cc90de3b07e5273c800c

• access.redhat.comRHSA-2023:7879https://access.redhat.com/errata/RHSA-2023:7879vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-4535vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2240914https://bugzilla.redhat.com/show_bug.cgi?id=2240914issue-trackingx_refsource_REDHAT
• github.comhttps://github.com/OpenSC/OpenSC/commit/f1993dc4e0b33050b8f72a3558ee88b24c4063b2
• 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
• 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/