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Fencer Vulns
critical 9.8

CVE-2021-35064 in the critical feed json

KramerAV VIAWare, all tested versions, allow privilege escalation through misconfiguration of sudo.

published 2021-07-12 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21709

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
70.8%
EPSS 70.8% chance of exploitation in 30 days, percentile 99.4%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

KramerAV VIAWare, all tested versions, allow privilege escalation through misconfiguration of sudo. Sudoers permits running of multiple dangerous commands, including unzip, systemctl and dpkg.

Timeline

  1. Published
  2. First public exploit (EDB-50856)

Exploit prediction

70.75% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-50856 Kramer VIAware - Remote Code Execution (RCE) (Root) remote, 2022-04-07
  • Nuclei template Kramer VIAware - Privilege Escalation and Remote Code Execution nuclei detection template
  • kramerav.com https://www.kramerav.com/us/product/viaware referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/166623/Kramer-VIAware-Remote-Code-Execution.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

Classification

Weakness
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Vulns 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.