Known exploited · Acclaim Systems
CVE-2021-44207: Acclaim Systems USAHERDS Use of Hard-Coded Credentials Vulnerability
What it is
Acclaim Systems USAHERDS contains a hard-coded credentials vulnerability that could allow an attacker to achieve remote code execution on the system that runs the application. The MachineKey must be obtained via a separate vulnerability or other channel.
- Vendor
- Acclaim Systems
- Product
- USAHERDS
- Added to KEV
- December 23, 2024
- CISA due date
- January 13, 2025
- Ransomware use
- Unknown
What CISA requires
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Please contact the product developer for support and vulnerability mitigation.
Forensic triage
No
What to do now
- Find every instance of USAHERDS you run, including the forgotten ones, and check its version against the vendor advisory.
- Apply the vendor's fix or mitigation, before January 13, 2025 if you are bound by CISA's deadline, sooner if it faces the internet.
- Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
References
H2 Security
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Start freeSource: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.