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VulnerabilitiesSep 19, 2026

SolarWinds Patches ARM Hard-Coded Key Flaw Enabling Unauthenticated RCE

SolarWinds patches high-severity RCE flaw in Access Rights Manager due to hard-coded key.

SolarWinds has released security updates to fix a critical vulnerability (CVE-2026-28326) in its Access Rights Manager (ARM) software. The flaw, rated 8.8 CVSS, stems from a hard-coded static key and allows for unauthenticated remote code execution. The company also recently patched other vulnerabilities in Web Help Desk and Serv-U.

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The lesson from this incident

Full lesson

SolarWinds Access Rights Manager contained a hard-coded static cryptographic key — a fundamental secure development failure — that allowed any unauthenticated attacker to achieve remote code execution with a CVSS score of 8.8. Hard-coded credentials and keys are a well-known anti-pattern that bypass all authentication controls, effectively leaving a permanent backdoor built into the product itself. This is particularly dangerous in Access Rights Manager software, which is designed to control and audit privileged access across an organization, meaning a compromise could cascade into full environment takeover. The recurrence of critical CVEs across multiple SolarWinds products (ARM, Web Help Desk, Serv-U) highlights systemic secure development lifecycle (SDLC) gaps. Organizations relying on this software for privileged access governance face compounded risk if patching is delayed.

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Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

  • cve — CVE-2026-28326
  • cve — CVE-2026-28323
  • cve — CVE-2026-28299
  • cve — CVE-2026-28302
  • cve — CVE-2026-28304
  • cve — CVE-2026-28317
  • cve — CVE-2026-28321

Entities

Access Rights Manager (product)SolarWinds (vendor)Web Help Desk (product)Serv-U (product)