CVE-2007-4409

Exp

Race condition in ircu 2.10.12.01 through 2.10.12.05 allows remote attackers to set a new Apass during a netburst by arranging for ops privilege to be granted before the mode arrives.

Published: 2007-08-18 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-4409 is rated High Exploit Risk (62/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.89%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2007-4409

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2007-4409

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 2026-04-06 0.69% 0.89% +0.21%
2 2025-03-17 1.53% 0.69% -0.84%
3 2024-06-21 — 1.53% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-4409

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.1 2.0 MEDIUM
AV:N/AC:H/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 4.9 6.4 [email protected]

Weakness enumeration for CVE-2007-4409

OS Trackers for CVE-2007-4409

vendor priority summary link
debian unimportant CVE-2007-4409 unimportant priority: Debian including 1 source packages (ircd-ircu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2007-4409
ubuntu medium CVE-2007-4409 medium priority: Ubuntu including 1 source packages (ircd-ircu), 5 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): not-affected 4, released 1. https://ubuntu.com/security/CVE-2007-4409

Affected software / configurations for CVE-2007-4409

Vendor Product Version Raw CPE
universal_ircd ircu 2.10.12.01 cpe:2.3:a:universal_ircd:ircu:2.10.12.01:*:*:*:*:*:*:*
universal_ircd ircu 2.10.12.02 cpe:2.3:a:universal_ircd:ircu:2.10.12.02:*:*:*:*:*:*:*
universal_ircd ircu 2.10.12.03 cpe:2.3:a:universal_ircd:ircu:2.10.12.03:*:*:*:*:*:*:*
universal_ircd ircu 2.10.12.04 cpe:2.3:a:universal_ircd:ircu:2.10.12.04:*:*:*:*:*:*:*
universal_ircd ircu 2.10.12.05 cpe:2.3:a:universal_ircd:ircu:2.10.12.05:*:*:*:*:*:*:*

References for CVE-2007-4409

cvelogic Threat Intelligence