How severe is CVE-2012-6067?

CVE-2012-6067 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2012-6067 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-6067?

CVE-2012-6067 primarily affects Freeftpd. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-6067?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2012-6067 published?

CVE-2012-6067 was published on 2012-12-04 and last updated on 2026-06-16.

CVE-2012-6067

CVE-2012-6067 is a critical-severity vulnerability in Freeftpd with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Freeftpd
Published: 2012-12-04
Last modified: 2026-06-16

Description

freeFTPd.exe in freeFTPd through 1.0.11 allows remote attackers to bypass authentication via a crafted SFTP session, as demonstrated by an OpenSSH client with modified versions of ssh.c and sshconnect2.c.

Frequently asked questions

What is CVE-2012-6067?: freeFTPd.exe in freeFTPd through 1.0.11 allows remote attackers to bypass authentication via a crafted SFTP session, as demonstrated by an OpenSSH client with modified versions of ssh.c and sshconnect2.c.
How severe is CVE-2012-6067?: CVE-2012-6067 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2012-6067 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-6067?: CVE-2012-6067 primarily affects Freeftpd. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-6067?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2012-6067 published?: CVE-2012-6067 was published on 2012-12-04 and last updated on 2026-06-16.

References

http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0011.html

Affected products (11)

cpe:2.3:a:freeftpd:freeftpd:*:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:freeftpd:freeftpd:1.0.10:*:*:*:*:*:*:*

More vulnerabilities in Freeftpd

CVE-2013-10042 — Critical (CVSS 9.8): A stack-based buffer overflow vulnerability exists in freeFTPd version 1.0.10 and earlier in the handling of the FTP…
CVE-2019-19383 — High (CVSS 8.8): freeFTPd 1.0.8 has a Post-Authentication Buffer Overflow via a crafted SIZE command (this is exploitable even if…
CVE-2006-2407 — High (CVSS 7.5): Stack-based buffer overflow in (1) WeOnlyDo wodSSHServer ActiveX Component 1.2.7 and 1.3.3 DEMO, as used in other…
CVE-2005-3684 — High (CVSS 7.5): Multiple buffer overflows in freeFTPd 1.0.8, without logging enabled, allow remote authenticated attackers to cause a…
CVE-2005-3683 — High (CVSS 7.5): Stack-based buffer overflow in freeFTPd before 1.0.9 with Logging enabled, allows remote attackers to cause a denial of…
CVE-2005-3812 — Medium (CVSS 6.8): freeFTPd 1.0.10 allows remote authenticated users to cause a denial of service (null dereference and crash) via a PORT…

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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →