Is CVE-2014-9403 in the CISA KEV catalog?

No. CVE-2014-9403 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-9403?

CVE-2014-9403 has a CVSS v2 base score of 4.0 (MEDIUM).

What is the EPSS score for CVE-2014-9403?

CVE-2014-9403 has an EPSS score of 2.16% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-9403?

Upgrade znc on debian 11 to 1.2-4 or later.

CVE & CISA-KEV Catalog

CVE-2014-9403

MEDIUMEPSS 80th pctl

4.0

CVSS v2

NVD

Description

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.

How to fix

Remediation Available

zncDebian

Fixed in:1.2-4CVE-2014-9403

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.16%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Vendor Advisory1

github.com

Other references6

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.