VULNERABILITY INTELLIGENCE
CVE-2007-2243
CVSS score5 MEDIUM
EPSS probability2.40%
CISA KEVNot currently listed
Published2007-04-25
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:N
Description
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.
Weakness classification
- CWE-287: Improper Authentication