CVE-2012-6066

highpriority · attend · 61EPSS 0.395 · 99 %ileexploit · weaponizedEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

5 exploits · weaponized

Likely / severe?

39.5% (99th) EPSS

CVSS 9.3 · high

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

freeSSHd.exe in freeSSHd through 1.2.6 allows remote attackers to bypass authentication via a crafted session, as demonstrated by an OpenSSH client with modified versions of ssh.c and sshconnect2.c.

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:C/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimary

exploits (5)

Public proof-of-concept and weaponised exploit code.

exploit/windows/ssh/freesshd_authbypassFreesshd Authentication Bypassweaponized · metasploit
EDB-23079freeFTPd 1.2.6 - Remote Authentication Bypassfunctional · exploit_db
EDB-23080freeSSHd 2.1.3 - Remote Authentication Bypassfunctional · exploit_db
EDB-24133freeSSHd 1.2.6 - Authentication Bypass (Metasploit)functional · exploit_db
bongbongco/CVE-2012-6066FreeSSHD Remote Authentication Bypass Vulnerability (freeSSHd 2.1.3)PoC · poc_in_github

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
freesshd freesshd≤ 1.2.6nvdUScpe:2.3:a:freesshd:freesshd:*:*:*:*:*:*:*:*
freesshd freesshd= 1.2.1nvdUScpe:2.3:a:freesshd:freesshd:*:*:*:*:*:*:*:*
freesshd freesshd= 1.2.2nvdUScpe:2.3:a:freesshd:freesshd:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2012-12-04modified 2026-06-16

related (7,727)

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+7722 more

references (3)

External citations — patches, advisories, analysis.

scry

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