OpenSSH, when using OPIE (One-Time Passwords in Everything) for PAM, allows remote attackers to determine the existence of certain user acc…

published 2007-05-21 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2760

cvss: 4.3; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 8.6%; EPSS 8.6% chance of exploitation in 30 days, percentile 95%
public exploits: 0; none known

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.

Patch / fix

distros 1

openssh Azure Linux 3.0 9.5p1-2
openssh CBL-Mariner 2.0 8.8p1-2

azure linux advisories AZL-35079 AZL-6778

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Exploit prediction

8.62% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

osvdb.org /34601
vdb-entry, broken-link
archives.neohapsis.com /archives/fulldisclosure/2007-04/0635.html
mailing-list, broken-link
security.netapp.com /advisory/ntap-20191107-0002/
third-party-advisory

Sources

CVE List CVE-2007-2768
NVD CVE-2007-2768

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.

Summary