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Fencer Intel
critical 9.1

CVE-2024-42049 json

TightVNC (Server for Windows) before 2.8.84 allows attackers to connect to the control pipe via a network connection.

published 2y ago modified 4mo ago also EUVD-2024-39417

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
1
Exploit-DB

Summary

TightVNC (Server for Windows) before 2.8.84 allows attackers to connect to the control pipe via a network connection.

Patch / fix

  • tightvnc tightvnc 2.8.84

Is CVE-2024-42049 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. Published
  2. First public exploit (EDB-52322)

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2y ago

Exploit prediction

2.39% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • EDB-52322 TightVNC 2.8.83 - Control Pipe Manipulation local, 2025-06-09

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

  • tightvnc tightvnc

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.