CVE-2006-0677

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated...

7.8 HighFix available

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.

Exploit likelihood

3.14%Down 0.6 points since Feb 4, 2022

What each source reports

NVD Score used7.8

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.

Record: CVE-2006-0677
CVSS 2.0: 7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Updated: 2026-11-02

CVE ListNo score

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.

Record: CVE-2006-0677
Updated: 2026-11-02

EUVDEUVD-2006-0684No score

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.

Record: EUVD-2006-0684
Updated: 2026-11-03

GitHub AdvisoriesGHSA-5rvx-m258-68crNo score

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated...

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.

Record: GHSA-5rvx-m258-68cr
Updated: 2026-11-02

OSVNo score

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.

Record: CVE-2006-0677
Updated: 2026-11-02

OSVDEBIAN-CVE-2006-0677No score

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.

Record: DEBIAN-CVE-2006-0677
Updated: 2026-11-02

Affected products

kth heimdal

Affected packages

Affected packages
Package	Affected	Fixed
`heimdal` Debian:12	before 0.7.2-1	0.7.2-1
`heimdal` Debian:13	before 0.7.2-1	0.7.2-1
`heimdal` Debian:14	before 0.7.2-1	0.7.2-1
`heimdal` Debian:3.1 From an advisory covering 2 CVEs	before 0.6.3-10sarge2, plus listed versions 0.6.3-100.6.3-10sarge1	0.6.3-10sarge2

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2006-0677 is a high vulnerability (CVSS 7.8) in Kth Heimdal, published February 14, 2006. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.14%, the 88th percentile. Fixed in heimdal 0.7.2-1.

References

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