CVE-2023-2977

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

0.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 21.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2023-06-01 00:00Z3 YR AGO

Last updated

2025-11-03 21:47Z10 MO AGO

Reserved

2023-05-30

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

cf4b9008ebe5e156060bef878181dde0f372c076c7c1e2f042416dbbd1627b0a

• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-2977
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2211088
• github.comhttps://github.com/OpenSC/OpenSC/issues/2785
• github.comhttps://github.com/OpenSC/OpenSC/pull/2787
• lists.debian.org[debian-lts-announce] 20230621 [SECURITY] [DLA 3463-1] opensc security updatehttps://lists.debian.org/debian-lts-announce/2023/06/msg00025.htmlmailing-list
• lists.fedoraproject.orgFEDORA-2023-29530cc60bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LAR54OV6EHA56B4XJF6RNPQ4HJ2ITU66/vendor-advisory
• lists.fedoraproject.orgFEDORA-2023-2afb831742https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FJD4Q4AJSGE5UIJI7OUYZY4HGGCVYQNI/vendor-advisory
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/12/msg00026.html