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Servers and applications

CVE-2007-2768

OpenSSH, when using OPIE (One-Time Passwords in Everything) for PAM, allows remote attackers to determine the existence of certain user accounts, which displays a different response if the user account exists and is configured to use one-time passwords (OTP), a similar issue to CVE-2007-2243.

Severity
Medium 4.3
Published
21 May 2007
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
8.6% in the next 30 daysHigher than 95% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Information exposure (CWE-200)
Attack
Over the network · No login needed
Attacker can
Read some data
CVSS vector
AV:N/AC:M/Au:N/C:P/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSHServers and applications · cpe:a:openbsd:openssh
  • Every version

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2007-2768
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2007-2768