What is CVE-2025-70314?

CVE-2025-70314 is a critical-severity vulnerability in Ourway Webfsd, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-02-12.

How severe is CVE-2025-70314?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Ourway Webfsd

CVE-2025-70314

webfsd 1.21 is vulnerable to a Buffer Overflow via a crafted request. This is due to the filename variable

Vulnerability class: Buffer Overflow

Published 2026-02-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (37.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000

Affected products

Ourway Webfsd — versions 1.21

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/ourway/webfsd (Product)
gist.github.com/Err0rzz/3afe49f54e1121b8a08a69801b61cfcc (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-70314?: CVE-2025-70314 is a critical-severity vulnerability in Ourway Webfsd, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-02-12.
How severe is CVE-2025-70314?: Critical severity. CVSS v3 base score is 9.8 out of 10.