How severe is CVE-2021-26273?

CVE-2021-26273 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-26273 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26273?

CVE-2021-26273 affects Ninjarmm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26273?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-26273 published?

CVE-2021-26273 was published on 2021-07-07 and last updated on 2026-06-17.

CVE-2021-26273

CVE-2021-26273 is a high-severity vulnerability in Ninjarmm with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Ninjarmm
Published: 2021-07-07
Last modified: 2026-06-17

Description

The Agent in NinjaRMM 5.0.909 has Incorrect Access Control.

Frequently asked questions

What is CVE-2021-26273?: The Agent in NinjaRMM 5.0.909 has Incorrect Access Control.
How severe is CVE-2021-26273?: CVE-2021-26273 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-26273 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26273?: CVE-2021-26273 affects Ninjarmm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26273?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-26273 published?: CVE-2021-26273 was published on 2021-07-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ninjarmm:ninjarmm:5.0.909:*:*:*:*:windows:*:*

More vulnerabilities in Ninjarmm

CVE-2021-26274 — High (CVSS 7.1): The Agent in NinjaRMM 5.0.909 has Insecure Permissions.

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