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…
- 7.6HighCVSS base score
- 5.6%Exploitation in 30 daysEPSS · top 7.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By mitre
- 1 day later
· 1 day later
Published
- 16 years later
· 16 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.6 | AV:N/AC:H/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 5.6% · top 7.1% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.6.
Affected products
n/a
- affected n/a
References
6
- 20030501 Re: OpenSSH/PAM timing attack allows remote users identification (opens in a new tab)mailing-listx_transferred
- 20030501 Re: OpenSSH/PAM timing attack allows remote users identification (opens in a new tab)mailing-listx_transferred
- 7482 (opens in a new tab)vdb-entryx_transferred
- 20030505 Re: OpenSSH/PAM timing attack allows remote users identification (opens in a new tab)mailing-listx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=248747 (opens in a new tab)x_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2003-1552 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2003-1562)Record last updated .