CVE-2023-40477

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

11.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 95.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2024-05-03 02:11Z2 YR AGO

Last updated

2025-11-04 19:20Z11 MO AGO

Reserved

2023-08-14

Assigning CNA

zdi

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses

• CWE-129Improper Validation of Array IndexVariant

Data version

5.2

Document digest

5e433a2c1aadef66b75b781a55f74e98f18a23a7bf651309ee26e2b7e7e55c1f

• www.zerodayinitiative.comZDI-23-1152https://www.zerodayinitiative.com/advisories/ZDI-23-1152/x_research-advisory
• www.win-rar.comvendor-provided URLhttps://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aavendor-advisory
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/11/msg00009.html