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Johnson Controls Metasys
<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-225-14.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>Successful exploitation of this vulnerability could allow a low-privilege user or attacker to inject a persistent malicious payload via a crafted URL that executes in the context of other users' sessions, including administrators, pot
MITRE ATT&CK techniques
Indicators of compromise
- CVE-2026-34491cve
- https://www.cve.org/CVERecord?id=CVE-2026-34491url
- https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Hurl
- https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Nurl
Original source: https://www.cisa.gov/news-events/ics-advisories/icsa-26-225-14
Same event, other sources
- Johnson Controls Metasyscisa_advisories · 2026-08-13