Skip to content
Fencer Vulns
high 8.1

CVE-2021-36205 json

Metasys session token

published 2022-04-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-22826

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

Under certain circumstances the session token is not cleared on logout.

Patch / fix

  • Johnson Controls Metasys 10.1.5, 11.0.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-22-104-02 updated cvss 8.1

Johnson Controls Metasys

  • Johnson Controls Inc All Metasys ADS/ADX/OAS Servers 10, 11
    affected: mitigation “Update all Metasys ADS/ADX/OAS Servers: Versions 10 with patch 10.1.5” johnsoncontrols.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Johnson Controls Metasys

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.