Buffer overflow in Zdir
CVE-2025-66945
A path traversal vulnerability exists in the ZIP extraction API of Zdir Pro 4.x. When a crafted ZIP archive is processed by the backend at /api/extract, files may be written outside the intended directory, leading to arbitrary file overwrite and potentially remote code execution
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (43.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/kaliworld/Zdir-Pro-Zip-slip-vulnerability/ (Exploit, Third Party Advisory, Mitigation)
- zeroday.endlessparadox.com/posts/cve-2025-66945/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-66945?
- CVE-2025-66945 is a critical-severity vulnerability in Zdir, classified under Out-of-bounds Write. CVSS score: 9.1/10. Published 2026-03-03.
- How severe is CVE-2025-66945?
- Critical severity. CVSS v3 base score is 9.1 out of 10.