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.

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

EPSS: 0.005 (41.7th percentile) — read the EPSS interpretation.

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.

Affected products

Zdir
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Exploit, Third Party Advisory, Mitigation)
cve@mitre.org (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.