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Fencer Intel
critical 9.8

CVE-2012-4284 in the critical feed json

A Privilege Escalation vulnerability exists in Viscosity 1.4.1 on Mac OS X due to a path name validation issue in the setuid-set ViscosityH…

published 2020-01-10 6 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4228

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
69.5%
EPSS 69.5% chance of exploitation in 30 days, percentile 99.3%
public exploits
3
Metasploit, Exploit-DB

Summary

A Privilege Escalation vulnerability exists in Viscosity 1.4.1 on Mac OS X due to a path name validation issue in the setuid-set ViscosityHelper binary, which could let a remote malicious user execute arbitrary code

Timeline

  1. First public exploit (Metasploit exploit/osx/local/setuid_viscosity)
  2. Published

Exploit prediction

69.52% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/osx/local/setuid_viscosity Viscosity setuid-set ViscosityHelper Privilege Escalation metasploit exploit, excellent rank, 2012-08-12
  • EDB-24579 Viscosity - setuid-set ViscosityHelper Privilege Escalation (Metasploit) local, 2013-03-05
  • EDB-20485 Viscosity - Local Privilege Escalation local, 2012-08-13
  • packetstormsecurity.com https://packetstormsecurity.com/files/120643/Viscosity-setuid-set-ViscosityHelper-Privilege-Escalation.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

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.