CVE-2020-6959
Honeywell
- Published
- 22 January 2020
- Last modified
- 17 June 2026
- CVSS
- 9.8 v3.1
- Severity
- critical
- EPSS
- 2.2% (81th pct)
- CISA KEV
- Not listed
- NVD status
- Modified
- Weaknesses
- CWE-502
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
The following versions of MAXPRO VMS and NVR, MAXPRO VMS:HNMSWVMS prior to Version VMS560 Build 595 T2-Patch, HNMSWVMSLT prior to Version VMS560 Build 595 T2-Patch, MAXPRO NVR: MAXPRO NVR XE prior to Version NVR 5.6 Build 595 T2-Patch, MAXPRO NVR SE prior to Version NVR 5.6 Build 595 T2-Patch, MAXPRO NVR PE prior to Version NVR 5.6 Build 595 T2-Patch, and MPNVRSWXX prior to Version NVR 5.6 Build 595 T2-Patch are vulnerable to an unsafe deserialization of untrusted data. An attacker may be able to remotely modify deserialized data without authentication using a specially crafted web request, resulting in remote code execution.
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 2.2% probability of exploitation activity in the next 30 days.
Affected products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| Hnmswvms | Honeywell | unknown | <= vms560 |
| Hnmswvmslt | Honeywell | unknown | <= vms560 |
| Maxpro NVR Pe | Honeywell | Network video recorder | <= 5.6 |
| Maxpro NVR Se | Honeywell | Network video recorder | <= 5.6 |
| Maxpro NVR Xe | Honeywell | Network video recorder | <= 5.6 |
| Mpnvrswxx | Honeywell | unknown | <= 5.6 |
References
- https://www.us-cert.gov/ics/advisories/icsa-20-021-01 third-party
- https://www.us-cert.gov/ics/advisories/icsa-20-021-01 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.