Vulnerability · Published Nov 3, 2026 · Assigned by certcc
CVE-2026-121578CVE-2026-121578
Medium 6.1
In plain English
A medium-severity cross-site scripting in Tactical RMM from Amidaware. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.3%top 75.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Amidaware | Tactical RMM | 0 – through 1.6.2 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N