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Fencer Vulns
high 7.8

CVE-2021-26273 json

The Agent in NinjaRMM 5.0.909 has Incorrect Access Control.

published 2021-07-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13087

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

The Agent in NinjaRMM 5.0.909 has Incorrect Access Control.

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • improsec.com https://improsec.com/tech-blog/privilege-escalation-vulnerability-in-ninjarmm referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

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.