CVE & CISA-KEV Catalog

CVE-2023-40477

HIGHEPSS 96th pctl
7.8
CVSS v3
NVD

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.

CWE-129

How to fix

Remediation Available
libclamunrarDebian
Fixed in:0.103.10-1~deb11u1CVE-2023-40477
Fixed in:1.0.3-1~deb12u1CVE-2023-40477
Fixed in:1.0.3-1CVE-2023-40477
Fixed in:1.0.3-1CVE-2023-40477
libclamunrarUbuntu
Fixed in:0.103.11-0ubuntu0.20.04.1USN-6569-1
Fixed in:0.103.11-0ubuntu0.22.04.1USN-6569-1
Fixed in:0.103.11-0ubuntu0.23.04.1USN-6569-1
Fixed in:1.0.4-0ubuntu0.23.10.1USN-6569-1
libclamunrar11Ubuntu
Fixed in:1.0.4-0ubuntu0.23.10.1USN-6569-1
libclamunrar9Ubuntu
Fixed in:0.103.11-0ubuntu0.20.04.1USN-6569-1
Fixed in:0.103.11-0ubuntu0.22.04.1USN-6569-1
Fixed in:0.103.11-0ubuntu0.23.04.1USN-6569-1
libunrar5Ubuntu
Fixed in:1:5.6.6-2ubuntu0.1USN-7350-1
Fixed in:1:6.1.5-1ubuntu0.1USN-7350-1
rarUbuntu
Fixed in:2:6.23-1~20.04.1USN-7349-1
Fixed in:2:6.23-1~22.04.1USN-7349-1
unrarUbuntu
Fixed in:1:5.6.6-2ubuntu0.1USN-7350-1
Fixed in:1:6.1.5-1ubuntu0.1USN-7350-1
unrar-nonfreeUbuntu
Fixed in:1:5.6.6-2ubuntu0.1USN-7350-1
Fixed in:1:6.1.5-1ubuntu0.1USN-7350-1
WinRARWindows application
Affected:6.23Fixed in:6.23win.rar GmbH

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

13.08%probability of exploitation in 30 days
96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Third-Party Advisory1
Release Notes1
Other references1

Related Vulnerabilities

Other CWE-129 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2021-35592Medium6.351%-Fix
CVE-2021-35598Medium6.350%-Fix
CVE-2021-35594Medium6.350%-Fix
CVE-2014-6317High7.118%--
CVE-2022-35737High7.518%-Fix
CVE-2023-0755Critical9.812%--
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.