CVE-2014-9403

The CWebAdminMod::ChanPage function in modules/webadmin.cpp in ZNC before 1.4 allows remote authenticated users to cause a denial of service (NULL pointer dereference and crash) by adding a channel with the same name as an existing channel but without the leading # character, related to a "use-after-delete" error.

Published: 2014-12-19 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-9403 is rated Moderate Risk (43/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.09%). Review affected assets and schedule remediation.

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-2014-9403

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 2026-03-17 1.27% 1.09% -0.18%
2 2025-04-10 1.14% 1.27% +0.13%
3 2025-03-30 — 1.14% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-9403

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2014-9403

OS Trackers for CVE-2014-9403

vendor priority summary link
debian not yet assigned CVE-2014-9403 not yet assigned priority: Debian including 1 source packages (znc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-9403
gentoo normal CVE-2014-9403: 1 GLSA(s) (201412-31), 1 atom(s) (net-irc/znc); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-9403
ubuntu medium CVE-2014-9403 medium priority: Ubuntu including 1 source packages (znc), 12 status rows across 12 suites (artful, bionic, lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 8, ignored 2, released 2. https://ubuntu.com/security/CVE-2014-9403

NVD evaluator notes for CVE-2014-9403

Comment: <a href="http://cwe.mitre.org/data/definitions/476.html">CWE-476: NULL Pointer Dereference</a>

Affected software / configurations for CVE-2014-9403

Vendor Product Version Raw CPE
znc znc <= 1.2 cpe:2.3:a:znc:znc:*:*:*:*:*:*:*:*

References for CVE-2014-9403

cvelogic Threat Intelligence