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CVE-2026-121578VulnerabilityPublished

Tactical RMM contains a stored XSS vulnerability caused by improperly validated input or encode output for various

Source GCVE Database

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Authoritative record:CVE-2026-121578· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium.

Data as of 3 Nov 2026, 19:59 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.16.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
AmidawareTactical RMMAffected
  • <=1.6.2
Fixed in–
GitHubamidaware/tacticalrmm-webpkg:github/amidaware/tacticalrmm-webOther threatsAffected
  • <=1.6.2
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, users should exercise caution when interacting with untrusted content in Tactical RMM and consider applying web application firewall rules or other protective controls to detect and block malicious input.

Description

Tactical RMM has a stored cross-site scripting (XSS) vulnerability due to improper input validation or output encoding in multiple fields. This flaw allows attackers to inject malicious HTML or JavaScript into the application database, which executes in users' browsers when viewing affected content. Exploitation can lead to account takeover or arbitrary code execution in the context of the user session.

References

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