CVE-2007-2243 json
OpenSSH 4.6 and earlier, when ChallengeResponseAuthentication is enabled, allows remote attackers to determine the existence of user accoun…
published 2007-04-25 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2238
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
OpenSSH 4.6 and earlier, when ChallengeResponseAuthentication is enabled, allows remote attackers to determine the existence of user accounts by attempting to authenticate via S/KEY, which displays a different response if the user account exists, a similar issue to CVE-2001-1483.
Exploit prediction
2.40% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
lists.grok.org.uk
/pipermail/full-disclosure/2007-April/053906.html
mailing-list
-
securityfocus.com
/bid/23601
vdb-entry
-
securityreason.com
/securityalert/2631
third-party-advisory
-
osvdb.org
/34600
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/33794
vdb-entry
-
lists.grok.org.uk
/pipermail/full-disclosure/2007-April/053951.html
mailing-list
- security.netapp.com /advisory/ntap-20191107-0003/
Sources
- CVE List CVE-2007-2243
- NVD CVE-2007-2243
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.