CVE-2024-39844

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Published Jul 3, 2024 CVSS 3.1 · 9.8 Critical EPSS 3.9% KEV · Not listed

Description

In ZNC before 1.9.1, remote code execution can occur in modtcl via a KICK.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

No data.

No data.

Vendor	Product	Versions
Znc	Znc	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Debian DSA	DSA-5725-1	znc security update
Ubuntu USN	USN-6990-1	znc vulnerability

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: 3.9% (3.862% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact total

References

Link	Providers
http://www.openwall.com/lists/oss-security/2024/07/03/9
https://github.com/znc/znc/releases/tag/znc-1.9.1
https://wiki.znc.in/Category:ChangeLog
https://wiki.znc.in/ChangeLog/1.9.1
https://www.openwall.com/lists/oss-security/2024/07/03/9

History

Feb 26, 2026 12:15 PM Affected versions updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:znc:znc::::::::
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Jul 16, 2025 1:45 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.40478}`	epss `{'score': 0.36185}`

Subscriptions

Znc Znc

Weaknesses

CWE-94

Sources

CVE record Updated: Aug 2, 2024, 4:26 AM

Status: PUBLISHED
Assigner: mitre
Published: Jul 3, 2024, 12:00 AM
Updated: Aug 2, 2024, 4:26 AM
Reserved: Jun 29, 2024, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 4:26 AM

Updated: Aug 2, 2024, 4:26 AM

NVD Updated: Jun 17, 2026, 7:42 AM

Status: Deferred
Published: Jul 3, 2024, 5:15 PM
Modified: Jun 17, 2026, 7:42 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment Updated: Jul 13, 2025, 11:22 AM

Updated: Jul 13, 2025, 11:22 AM

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