CVE-2023-40477
Reported by zdi · Published May 3, 2024
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.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| RARLAB | WinRAR | 6.21 |
| rarlab | winrar | 6.21 |
| RARLAB | WinRAR | 6.21 |
Timeline
- Aug 17, 2023 CVE Published
- Aug 20, 2023 PoC Published (28 in total, the first dated here)
- May 3, 2024 EPSS Score (30 in total, the first dated here)
- Apr 30, 2026 Security Advisory (6 in total, the first dated here)
- Jun 30, 2026 CVE Updated
- Aug 4, 2026 Coalition ESS Score
- Nov 2, 2026 Distribution Patch (3 in total, the first dated here)
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2023-40477
vulnetix vdb fixes CVE-2023-40477Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2023-40477/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- ZDI-23-1152 x_research-advisory
- vendor-provided URL vendor-advisory
- Scan_WinRAR exploit
- Winrar-CVE-2023-40477-POC exploit
- https://lists.debian.org/debian-lts-announce/2023/11/msg00009.html advisory