CVE-2007-5715

DenyHosts 2.6 processes OpenSSH sshd "not listed in AllowUsers" log messages with an incorrect regular expression that does not match an IP address, which might allow remote attackers to avoid detection and blocking when making invalid login attempts with a username not present in AllowUsers, as demonstrated by the root username, a different vulnerability than CVE-2007-4323.

Published: 2007-10-30 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-5715 is rated Low Risk (39.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2007-5715

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.27% 1.07% +0.79%
2 2025-03-17 0.46% 0.27% -0.19%
3 2024-07-26 — 0.46% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-5715

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2007-5715

OS Trackers for CVE-2007-5715

vendor priority summary link
ubuntu low CVE-2007-5715 low priority: Ubuntu including 1 source packages (denyhosts), 5 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): released 2, DNE 1, needed 1, not-affected 1. https://ubuntu.com/security/CVE-2007-5715

Affected software / configurations for CVE-2007-5715

Vendor Product Version Raw CPE
denyhosts denyhosts 2.6 cpe:2.3:a:denyhosts:denyhosts:2.6:*:*:*:*:*:*:*

References for CVE-2007-5715

cvelogic Threat Intelligence