CVE-2001-1507

OpenSSH before 3.0.1 with Kerberos V enabled does not properly authenticate users, which could allow remote attackers to login unchallenged.

Published: 2001-12-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-1507 is rated Moderate Risk (59.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.24%). EPSS rose +1.34% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2001-1507

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.90% 2.24% +1.34%
2 2026-05-17 1.05% 0.90% -0.15%
3 2025-12-28 — 1.05% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-1507

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2001-1507

OS Trackers for CVE-2001-1507

vendor priority summary link
debian not yet assigned CVE-2001-1507 not yet assigned priority: Debian including 1 source packages (openssh), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2001-1507
redhat — — https://access.redhat.com/security/cve/CVE-2001-1507

Vendor comments (NVD) for CVE-2001-1507

  • Red Hat (2006-08-30T00:00:00)

    Not vulnerable. This issue did not affect the versions of OpenSSH as shipped with Red Hat Enterprise Linux 2.1, 3, or 4.

Affected software / configurations for CVE-2001-1507

Vendor Product Version Raw CPE
openbsd openssh 3.0 cpe:2.3:a:openbsd:openssh:3.0:*:*:*:*:*:*:*
openbsd openssh 3.0p1 cpe:2.3:a:openbsd:openssh:3.0p1:*:*:*:*:*:*:*

References for CVE-2001-1507

cvelogic Threat Intelligence