CVE-2023-40477
WinRAR Recovery Volume Array Index Validation Remote Code Execution
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.
INFO
Published Date :
May 3, 2024, 3:15 a.m.
Last Modified :
June 20, 2025, 6:13 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.0 | HIGH | [email protected] |
Solution
- Upgrade WinRAR to version 6.23 or later.
- Upgrade the rar and unrar packages.
- Update ClamAV packages to the latest version.
Public PoC/Exploit Available at Github
CVE-2023-40477 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-40477.
| URL | Resource |
|---|---|
| https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa | Release Notes |
| https://www.zerodayinitiative.com/advisories/ZDI-23-1152/ | Third Party Advisory VDB Entry |
| https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa | Release Notes |
| https://www.zerodayinitiative.com/advisories/ZDI-23-1152/ | Third Party Advisory VDB Entry |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-40477 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-40477
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE-2023-40477 PoC by Wild-Pointer
Python
Scan for WinRAR files affected to CVE-2023-40477
PowerShell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-40477 vulnerability anywhere in the article.
-
Daily CyberSecurity
WinRAR Update: Zero-Day Path Traversal Flaw (CVE-2025-8088) Actively Exploited to Deliver Malware
Security researchers at ESET have uncovered a zero-day path traversal vulnerability in the Windows version of WinRAR that has been actively exploited to execute arbitrary code on victims’ systems. Tra ... Read more
-
Daily CyberSecurity
CVE-2025-6218: WinRAR Directory Traversal Bug Opens the Door to Remote Code Execution
A newly disclosed vulnerability in RARLAB’s WinRAR, the long-standing compression utility for Windows, has exposed millions of users to a severe directory traversal flaw that could lead to remote code ... Read more
-
Hackread - Latest Cybersecurity, Tech, Crypto & Hacking News
Hackers Use Fake PoCs on GitHub to Steal WordPress Credentials, AWS Keys
SUMMARY Fake PoCs on GitHub: Cybercriminals used trojanized proof-of-concept (PoC) code on GitHub to deliver malicious payloads to unsuspecting users, including researchers and security professionals. ... Read more
-
Cybersecurity News
Warning: Fake WinRar Websites Distributing Malware
SonicWall has recently issued a cybersecurity alert about a deceptive website that mimics the official WinRar site. This fake site, win-rar.co, not only closely resembles the legitimate WinRar site bu ... Read more
The following table lists the changes that have been made to the
CVE-2023-40477 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 20, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:rarlab:winrar:*:*:*:*:*:*:*:* versions up to (excluding) 6.23 Added Reference Type CVE: https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa Types: Release Notes Added Reference Type Zero Day Initiative: https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa Types: Release Notes Added Reference Type CVE: https://www.zerodayinitiative.com/advisories/ZDI-23-1152/ Types: Third Party Advisory, VDB Entry Added Reference Type Zero Day Initiative: https://www.zerodayinitiative.com/advisories/ZDI-23-1152/ Types: Third Party Advisory, VDB Entry -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa Added Reference https://www.zerodayinitiative.com/advisories/ZDI-23-1152/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Received by [email protected]
May. 03, 2024
Action Type Old Value New Value Added 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. Added Reference Zero Day Initiative https://www.zerodayinitiative.com/advisories/ZDI-23-1152/ [No types assigned] Added Reference Zero Day Initiative https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa [No types assigned] Added CWE Zero Day Initiative CWE-129 Added CVSS V3 Zero Day Initiative AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H