How severe is CVE-2014-9403?

CVE-2014-9403 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2014-9403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-9403?

CVE-2014-9403 affects Znc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-9403?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-9403 published?

CVE-2014-9403 was published on 2014-12-19 and last updated on 2026-06-17.

CVE-2014-9403

CVE-2014-9403 is a medium-severity vulnerability in Znc with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Znc
Published: 2014-12-19
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2014-9403?: CVE-2014-9403 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2014-9403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-9403?: CVE-2014-9403 affects Znc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-9403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-9403 published?: CVE-2014-9403 was published on 2014-12-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:znc:znc:*:*:*:*:*:*:*:*

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