CVE-2023-40477

Name: CVE-2023-40477
Creator: NVD / NIST
Published: 2024-05-03T03:15:20.473+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 13.08%

Last modified Jun 17, 2026

CVE-2023-40477 is a vulnerability of currently unknown severity. RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of RARLAB WinRAR. EPSS estimates a 13.08% chance of exploitation in the next 30 days.

Description

RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of RARLAB WinRAR. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of recovery volumes. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21233.

Metrics

EPSS Probability

13.08%

95.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-129

Affected Software

Vendor	Product	Versions
Rarlab	Winrar	< 6.23

References

https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aaRelease Notes
https://www.zerodayinitiative.com/advisories/ZDI-23-1152/Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2023/11/msg00009.html
https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aaRelease Notes
https://www.zerodayinitiative.com/advisories/ZDI-23-1152/Third Party Advisory, VDB Entry

Timeline

Published: May 3, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40477?

How severe is CVE-2023-40477?

Severity scoring for CVE-2023-40477 is pending analysis. The EPSS model estimates a 13.08% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40477?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-40477?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST