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01 Record

CVE-2026-5846

Hard-coded Cryptographic Key in Watchfire Controllers

HighPUBLISHEDCNA: icscert
CNA base score7.6 CVSS v4.0CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

02 Description

Hard-coded Cryptographic Key in Watchfire Controllers

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.21% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 11.5% of scored records. A rank, not a probability.
NVD base score
7.6 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-09-08.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-07-30 21:12Z3 MO AGO
Last updated
2026-07-31 20:12Z2 MO AGO
Reserved
2026-04-08
Assigning CNA
icscert
Record state
PUBLISHED
Severity
High (CVSS 7.6)
CNA CVSS vector
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
Weaknesses
  • CWE-321Use of Hard-coded Cryptographic KeyVariant
Data version
5.2
Document digest
c8cc2c2cf1b0b67ede89fb04c09c502eb8e3eb3c5dbfcc8bfb38f57e20e7a8f3

05 Affected products

VendorProductVersionsPlatforms
WatchfireBC55012.30—
WatchfireBC75011.33, 12.35—
WatchfireBC76012.38, 13.00—
WatchfireBC760DC12.39—

06 References

07 Remediation

Watchfire has applied the required security patch to all affected controllers under its management. Watchfire recommends users verify their controller software version and upgrade to one of the approved versions below, if they are not already on an approved patch level. Watchfire has issued patches to disable the use of the existing certificate as follows: * BC550 12.30: Patch to 12.31 SP1 * BC750 11.33: Patch to 11.34 * BC750 12.35: Patch to 12.36 SP1 * BC760 12.38: Patch to 12.41 SP1 * BC760 13.00: Patch to 14.00 SP1 * BC760DC 12.39: Patch to 12.41 SP1