What is CVE-2026-121578?

CVE-2026-121578 is a medium-severity vulnerability in Amidaware Tactical Rmm, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-11-03.

How severe is CVE-2026-121578?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Amidaware Tactical Rmm

CVE-2026-121578

Tactical RMM contains a stored XSS vulnerability caused by improperly validated input or encode output for various fields, enabling HTML/JavaScript to be stored in the tools database, which is then executed in the browsers of users when they view content containing the infected objects, leading to account takeover or code execution.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-11-03 · last modified 2026-11-03.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Amidaware Tactical Rmm

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-121578?: CVE-2026-121578 is a medium-severity vulnerability in Amidaware Tactical Rmm, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-11-03.
How severe is CVE-2026-121578?: Medium severity. CVSS v3 base score is 6.1 out of 10.