CVE-2024-42458

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type.

9.8 CriticalFix available

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.83%Up 0.8 points since Aug 6, 2024

What each source reports

NVD Score used 9.8

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

Record: CVE-2024-42458
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-20
Updated: 2026-11-02

CVE List 9.8

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

Record: CVE-2024-42458
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-20
Updated: 2026-11-02

EUVDEUVD-2024-39628 9.8

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

Record: EUVD-2024-39628
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jxwh-98r5-mx84 9.8

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type.

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type.

Record: GHSA-jxwh-98r5-mx84
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSVALPINE-CVE-2024-42458 9.8

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

Record: ALPINE-CVE-2024-42458
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-03

OSV 9.8

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

Record: CVE-2024-42458
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2024-42458 9.8

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

Record: DEBIAN-CVE-2024-42458
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2024-42458 9.8

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

Record: UBUNTU-CVE-2024-42458
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVopenSUSE-SU-2024:14238-1 No score

libneatvnc0-0.8.1-1.1 on GA media

These are all security issues fixed in the libneatvnc0-0.8.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:14238-1
Updated: 2026-11-02

Affected products

any1 neatvnc

Affected packages

Affected packages
Package	Affected	Fixed
`neatvnc` Alpine:v3.20	before 0.8.1-r0	0.8.1-r0
`neatvnc` Alpine:v3.21	before 0.8.1-r0	0.8.1-r0
`neatvnc` Alpine:v3.22	before 0.8.1-r0	0.8.1-r0
`neatvnc` Alpine:v3.23	before 0.8.1-r0	0.8.1-r0
`neatvnc` Alpine:v3.24	before 0.8.1-r0	0.8.1-r0
`neatvnc` Debian:12	All versions, plus listed versions 0.5.4+dfsg-10.5.4+dfsg-2~exp10.6.0+dfsg-10.6.0+dfsg-20.6.0+dfsg-3 Show 12 moreShow less 0.6.0+dfsg-40.7.0+dfsg-10.7.0+dfsg-1~exp10.7.1+dfsg-10.7.1+dfsg-20.8.0+dfsg-10.8.0+dfsg-20.8.0+dfsg-30.9.1+dfsg-10.9.1+dfsg-1.11.0.0+dfsg-1~exp11.0.1+dfsg-1	None known
`neatvnc` Debian:13	before 0.8.0+dfsg-2	0.8.0+dfsg-2
`neatvnc` Debian:14	before 0.8.0+dfsg-2	0.8.0+dfsg-2
`neatvnc` Ubuntu:22.04:LTS	All versions, plus listed versions 0.4.0+dfsg-2	None known
`neatvnc` Ubuntu:24.04:LTS	All versions, plus listed versions 0.6.0+dfsg-4build10.7.0+dfsg-10.7.1+dfsg-10.7.1+dfsg-20.7.1+dfsg-2build20.7.1+dfsg-2build3	None known
`neatvnc` openSUSE:Tumbleweed	before 0.8.1-1.1	0.8.1-1.1

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected, aliases, references	OSV
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-42458 is a critical vulnerability (CVSS 9.8) in Any1 Neatvnc, published August 2, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.83%, the 57th percentile. Fixed in neatvnc 0.8.1-r0.

References

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