PatchTheCVECVE-2024-42458: server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue
CVE-2024-42458 is a critical-severity flaw (CVSS 9.8) affecting neatvnc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.8% (top 43%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2024-08-02 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2024-42458?
neatvnc: upgrade to 0.8.1. Exact commands for each OS are on this page.
Is CVE-2024-42458 being exploited?
CVE-2024-42458 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2024-42458 affect?
CVE-2024-42458 affects neatvnc. Severity is critical (CVSS 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.
How urgent is CVE-2024-42458?
Priority 54/100. Critical severity; Remotely exploitable, no login, no user action