What is CVE-2023-40477?

CVE-2023-40477 is a high-severity vulnerability in Rarlab Winrar, classified under Improper Validation of Array Index. CVSS score: 7.8/10. Published 2024-05-03.

How severe is CVE-2023-40477?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-40477 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Rarlab Winrar

CVE-2023-40477

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 requ…

EPSS: 0.919 (99.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Rarlab Winrar — versions 6.21

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

Public proof-of-concept exploits

References

ZDI-23-1152 (x_research-advisory)
vendor-provided URL (vendor-advisory)

Frequently asked questions

What is CVE-2023-40477?: CVE-2023-40477 is a high-severity vulnerability in Rarlab Winrar, classified under Improper Validation of Array Index. CVSS score: 7.8/10. Published 2024-05-03.
How severe is CVE-2023-40477?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-40477 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.