CVE-2026-5846

7.6 highEPSS 0.2%

High (7.6). EPSS 0.2% chance of exploitation in the next 30 days.

The affected Watchfire Controller Software contains self-signed hard-coded RSA private keys and corresponding X.509 certificates used for authenticating and encrypting HTTPS/TLS connections to the controller's built-in web management interface. These keys are embedded in plaintext within the application patch binaries in the firmware directly from Watchfire's Remote Support filestore.

Severity

CVSS 4.0

7.6 high

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

5.7 medium

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-31)
CWE: CWE-321
Published: 2026-07-30
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-09.json
https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-09

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