What is CVE-2012-4434?

CVE-2012-4434 is a high-severity vulnerability in Cipherdyne Fwknop, classified under Incorrect Default Permissions. CVSS score: 8.8/10. Published 2020-01-09.

How severe is CVE-2012-4434?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Cipherdyne Fwknop

CVE-2012-4434

fwknop before 2.0.3 allow remote authenticated users to cause a denial of service (server crash) or possibly execute arbitrary code.

Published 2020-01-09 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.033 (88.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000

Affected products

Cipherdyne Fwknop
Fwknop — versions before 2.0.3

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

www.openwall.com/lists/oss-security/2012/09/19/2 (Exploit, Mailing List, Third Party Advisory)
www.openwall.com/lists/oss-security/2012/09/20/4 (Exploit, Mailing List, Third Party Advisory)
www.cipherdyne.org/blog/2012/09/software-release-fwknop-2.0.3.html (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2012-4434?: CVE-2012-4434 is a high-severity vulnerability in Cipherdyne Fwknop, classified under Incorrect Default Permissions. CVSS score: 8.8/10. Published 2020-01-09.
How severe is CVE-2012-4434?: High severity. CVSS v3 base score is 8.8 out of 10.