CVE-2026-5846 Hard-coded Cryptographic Key in Watchfire Controllers
Hard-coded RSA keys in Watchfire controllers allow attackers to bypass authentication and decrypt HTTPS traffic to the web management interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-5846?
CVE-2026-5846 is a high-severity vulnerability in Watchfire BC550, published on 30 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-321
Which versions are affected by CVE-2026-5846?
How do I fix CVE-2026-5846?
No fix has been published for CVE-2026-5846 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-5846 being exploited?
There is no known exploitation of CVE-2026-5846 in the wild and no public exploit code.
Sources
Also known as GHSA-5qvx-vvgc-3mv8.