What is CVE-2021-26274?

CVE-2021-26274 is a high-severity vulnerability in Ninjarmm, classified under Incorrect Default Permissions. CVSS score: 7.1/10. Published 2021-07-07.

How severe is CVE-2021-26274?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Ninjarmm

CVE-2021-26274

The Agent in NinjaRMM 5.0.909 has Insecure Permissions.

Published 2021-07-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Ninjarmm — versions 5.0.909

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

www.ninjarmm.com (Product, Vendor Advisory)
www.ninjarmm.com/blog/cve-2021-26273-cve-2021-26274/ (Vendor Advisory)
improsec.com/tech-blog/privilege-escalation-vulnerability-in-ninjarmm (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-26274?: CVE-2021-26274 is a high-severity vulnerability in Ninjarmm, classified under Incorrect Default Permissions. CVSS score: 7.1/10. Published 2021-07-07.
How severe is CVE-2021-26274?: High severity. CVSS v3 base score is 7.1 out of 10.