CVE-2021-27665
Johnson Controls
- Published
- 11 October 2021
- Last modified
- 17 June 2026
- CVSS
- 7.5 v3.1
- Severity
- high
- EPSS
- 1.6% (74th pct)
- CISA KEV
- Not listed
- NVD status
- Modified
- Weaknesses
- CWE-190
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
An unauthenticated remote user could exploit a potential integer overflow condition in the exacqVision Server with a specially crafted script and cause denial-of-service condition.
Exploitation
Not listed in the CISA Known Exploited Vulnerabilities catalogue as of 2026.09.04. That is an absence of confirmed public exploitation, not evidence that exploitation has not occurred. EPSS models a 1.6% probability of exploitation activity in the next 30 days.
Affected products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| Exacqvision Server | Johnson Controls | Video management software | 9.6, 9.8, < 24.06, <= 21.06.11.0 |
References
Vendor advisory and patch
- https://www.johnsoncontrols.com/cyber-solutions/security-advisories
- https://www.johnsoncontrols.com/cyber-solutions/security-advisories
- https://us-cert.gov/ics/advisories/icsa-21-280-03 third-party
- https://us-cert.gov/ics/advisories/icsa-21-280-03 third-party
Record assembled from NVD, CISA KEV 2026.09.04 and FIRST EPSS 2026-09-04. Affected products are those NVD's CPE configuration names that fall inside this site's scope; a CVE may affect products outside it.