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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

CVE-2021-44207 — Mandiant

HIGH

CVE-2021-44207 is a high-severity (CVSS 8.1) Hard-coded Credentials vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2024-12-23) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

Acclaim USAHERDS through 7.4.0.1 uses hard-coded credentials.

Published
Updated
Affected
1 product
Patched
See advisory
Exploits
1 known
Exploitation data as of Oct 22, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2024-12-23. Federal agencies were required to remediate by 2025-01-13.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2021-44207.

EPSS Exploitation Probability

via FIRST.org ↗
17.6%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs97th percentile — riskier than 97% of all scored CVEsHighest risk
6.33%10.9%15.6%20.2%8.9%17.6%17.6%Apr 26Jul 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2021-44207 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Description

Acclaim USAHERDS through 7.4.0.1 uses hard-coded credentials.

Affected Products

1 product · 1 configurations
Application
usaherdsacclaimsystems
≤ 7.4.0.1
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Vulnerability
  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2021-44207 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Acclaim USAHERDS through 7.4.0.1 uses hard-coded credentials.
O3 Security · Impact-Aware SCA

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CVE-2021-44207: Mandiant Hard-coded Credentials (KEV)