CVE-2003-1562

sshd in OpenSSH 3.6.1p2 and earlier, when PermitRootLogin is disabled and using PAM keyboard-interactive authentication, does not insert a delay after a root login attempt with the correct password, which makes it easier for remote attackers to use timing differences to determine if the password step of a multi-step authentication is successful, a different vulnerability than CVE-2003-0190.

Published: 2003-12-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-1562 is rated High Risk (67.3/100): CVSS High severity, with high exploitation likelihood (EPSS 5.57%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +4.77% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize 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-2003-1562

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 0.80% 5.57% +4.77%
2 2025-12-28 0.90% 0.80% -0.09%
3 2025-12-27 — 0.90% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-1562

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.6 2.0 HIGH
AV:N/AC:H/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 4.9 10.0 [email protected]

Weakness enumeration for CVE-2003-1562

OS Trackers for CVE-2003-1562

vendor priority summary link
debian low CVE-2003-1562 low 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-2003-1562
redhat low — https://access.redhat.com/security/cve/CVE-2003-1562

Vendor comments (NVD) for CVE-2003-1562

  • Red Hat (2008-08-11T00:00:00)

    The risks associated with fixing this bug are greater than the low severity security risk. We therefore currently have no plans to fix this flaw in Red Hat Enterprise Linux 2.1 and 3 which is in maintenance mode.

Affected software / configurations for CVE-2003-1562

Vendor Product Version Raw CPE
openbsd openssh 1.2 cpe:2.3:a:openbsd:openssh:1.2:*:*:*:*:*:*:*
openbsd openssh 1.2.1 cpe:2.3:a:openbsd:openssh:1.2.1:*:*:*:*:*:*:*
openbsd openssh 1.2.2 cpe:2.3:a:openbsd:openssh:1.2.2:*:*:*:*:*:*:*
openbsd openssh 1.2.3 cpe:2.3:a:openbsd:openssh:1.2.3:*:*:*:*:*:*:*
openbsd openssh 1.2.27 cpe:2.3:a:openbsd:openssh:1.2.27:*:*:*:*:*:*:*
openbsd openssh 1.3 cpe:2.3:a:openbsd:openssh:1.3:*:*:*:*:*:*:*
openbsd openssh 1.5 cpe:2.3:a:openbsd:openssh:1.5:*:*:*:*:*:*:*
openbsd openssh 1.5.7 cpe:2.3:a:openbsd:openssh:1.5.7:*:*:*:*:*:*:*
openbsd openssh 1.5.8 cpe:2.3:a:openbsd:openssh:1.5.8:*:*:*:*:*:*:*
openbsd openssh 2 cpe:2.3:a:openbsd:openssh:2:*:*:*:*:*:*:*
openbsd openssh 2.1 cpe:2.3:a:openbsd:openssh:2.1:*:*:*:*:*:*:*
openbsd openssh 2.1.1 cpe:2.3:a:openbsd:openssh:2.1.1:*:*:*:*:*:*:*
openbsd openssh 2.2 cpe:2.3:a:openbsd:openssh:2.2:*:*:*:*:*:*:*
openbsd openssh 2.3 cpe:2.3:a:openbsd:openssh:2.3:*:*:*:*:*:*:*
openbsd openssh 2.3.1 cpe:2.3:a:openbsd:openssh:2.3.1:*:*:*:*:*:*:*
openbsd openssh 2.5 cpe:2.3:a:openbsd:openssh:2.5:*:*:*:*:*:*:*
openbsd openssh 2.5.1 cpe:2.3:a:openbsd:openssh:2.5.1:*:*:*:*:*:*:*
openbsd openssh 2.5.2 cpe:2.3:a:openbsd:openssh:2.5.2:*:*:*:*:*:*:*
openbsd openssh 2.9 cpe:2.3:a:openbsd:openssh:2.9:*:*:*:*:*:*:*
openbsd openssh 2.9.9 cpe:2.3:a:openbsd:openssh:2.9.9:*:*:*:*:*:*:*
openbsd openssh 2.9.9p2 cpe:2.3:a:openbsd:openssh:2.9.9p2:*:*:*:*:*:*:*
openbsd openssh 2.9p1 cpe:2.3:a:openbsd:openssh:2.9p1:*:*:*:*:*:*:*
openbsd openssh 2.9p2 cpe:2.3:a:openbsd:openssh:2.9p2:*:*:*:*:*:*:*
openbsd openssh 3.0 cpe:2.3:a:openbsd:openssh:3.0:*:*:*:*:*:*:*
openbsd openssh 3.0.1 cpe:2.3:a:openbsd:openssh:3.0.1:*:*:*:*:*:*:*
openbsd openssh 3.0.1p1 cpe:2.3:a:openbsd:openssh:3.0.1p1:*:*:*:*:*:*:*
openbsd openssh 3.0.2 cpe:2.3:a:openbsd:openssh:3.0.2:*:*:*:*:*:*:*
openbsd openssh 3.0.2p1 cpe:2.3:a:openbsd:openssh:3.0.2p1:*:*:*:*:*:*:*
openbsd openssh 3.0p1 cpe:2.3:a:openbsd:openssh:3.0p1:*:*:*:*:*:*:*
openbsd openssh 3.1 cpe:2.3:a:openbsd:openssh:3.1:*:*:*:*:*:*:*
openbsd openssh 3.1p1 cpe:2.3:a:openbsd:openssh:3.1p1:*:*:*:*:*:*:*
openbsd openssh 3.2 cpe:2.3:a:openbsd:openssh:3.2:*:*:*:*:*:*:*
openbsd openssh 3.2.2 cpe:2.3:a:openbsd:openssh:3.2.2:*:*:*:*:*:*:*
openbsd openssh 3.2.2p1 cpe:2.3:a:openbsd:openssh:3.2.2p1:*:*:*:*:*:*:*
openbsd openssh 3.2.3p1 cpe:2.3:a:openbsd:openssh:3.2.3p1:*:*:*:*:*:*:*
openbsd openssh 3.3 cpe:2.3:a:openbsd:openssh:3.3:*:*:*:*:*:*:*
openbsd openssh 3.3p1 cpe:2.3:a:openbsd:openssh:3.3p1:*:*:*:*:*:*:*
openbsd openssh 3.4 cpe:2.3:a:openbsd:openssh:3.4:*:*:*:*:*:*:*
openbsd openssh 3.4p1 cpe:2.3:a:openbsd:openssh:3.4p1:*:*:*:*:*:*:*
openbsd openssh 3.5 cpe:2.3:a:openbsd:openssh:3.5:*:*:*:*:*:*:*
openbsd openssh 3.5p1 cpe:2.3:a:openbsd:openssh:3.5p1:*:*:*:*:*:*:*
openbsd openssh 3.6 cpe:2.3:a:openbsd:openssh:3.6:*:*:*:*:*:*:*
openbsd openssh 3.6.1 cpe:2.3:a:openbsd:openssh:3.6.1:*:*:*:*:*:*:*
openbsd openssh 3.6.1p1 cpe:2.3:a:openbsd:openssh:3.6.1p1:*:*:*:*:*:*:*
openbsd openssh 3.6.1p2 cpe:2.3:a:openbsd:openssh:3.6.1p2:*:*:*:*:*:*:*

References for CVE-2003-1562

cvelogic Threat Intelligence