CVE-2007-4411

Exp

ircu 2.10.12.05 and earlier allows remote attackers to discover the hidden IP address of arbitrary +x users via a series of /silence commands with (1) CIDR mask arguments or (2) certain other arguments that represent groups of IP addresses, then monitoring CTCP ping replies.

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-2007-4411 is rated Exploit Available (53.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.39%). 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-2007-4411

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

Exploit prediction scoring system (EPSS) score for CVE-2007-4411

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 0.32% 0.39% +0.07%
2 2025-03-30 0.38% 0.32% -0.06%
3 2025-03-29 — 0.38% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-4411

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:P/I:N/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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2007-4411

OS Trackers for CVE-2007-4411

vendor priority summary link
debian low CVE-2007-4411 low 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-2007-4411
ubuntu medium CVE-2007-4411 medium priority: Ubuntu including 1 source packages (ircd-ircu), 9 status rows across 9 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): ignored 4, not-affected 4, released 1. https://ubuntu.com/security/CVE-2007-4411

Affected software / configurations for CVE-2007-4411

Vendor Product Version Raw CPE
universal_ircd ircu <= 2.10.12.05 cpe:2.3:a:universal_ircd:ircu:*:*:*:*:*:*:*:*

References for CVE-2007-4411

cvelogic Threat Intelligence