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Fencer Vulns
critical 9.8

CVE-2021-45966 json

An issue was discovered in Pascom Cloud Phone System before 7.20.x.

published 2022-03-18 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32672

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.0%
EPSS 6.0% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

An issue was discovered in Pascom Cloud Phone System before 7.20.x. In the management REST API, /services/apply in exd.pl allows remote attackers to execute arbitrary code via shell metacharacters.

Exploit prediction

5.99% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • kerbit.io https://kerbit.io/research/read/blog/4 referenced PoC, tagged "exploit" by a source, unverified
  • tutorialboy24.blogspot.com https://tutorialboy24.blogspot.com/2022/03/the-story-of-3-bugs-that-lead-to.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-78 Improper Neutralization of Special Elements used in an OS Command

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.