What happened
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added three vulnerabilities affecting SolarWinds, Ivanti, and Workspace One to its Known Exploited Vulnerabilities (KEV) catalog after confirming they are being actively exploited by threat actors.
The vulnerabilities include:
- CVE-2025-26399: A critical deserialization flaw in SolarWinds Web Help Desk that could allow attackers to execute commands on the host system.
- CVE-2026-1603: An authentication bypass issue in Ivanti Endpoint Manager that could expose stored credentials.
- CVE-2021-22054: A server-side request forgery (SSRF) vulnerability in Workspace One UEM that may allow attackers to access sensitive information.
Security researchers reported that attackers are already exploiting the SolarWinds flaw to gain initial access to networks, with activity linked to the Warlock ransomware group.
CISA has directed U.S. federal agencies to patch the SolarWinds vulnerability by March 12, 2026, and the Ivanti and Workspace One issues by March 23, 2026.Â
Who is affected
Organizations using SolarWinds Web Help Desk, Ivanti Endpoint Manager, or Workspace One UEM may be exposed if systems remain unpatched. The directive specifically applies to U.S. federal agencies, but private-sector organizations using these products face similar risks.
Why CISOs should care
Vulnerabilities added to the KEV catalog are confirmed to be exploited in real-world attacks, making them high-priority patching items. These flaws could enable attackers to gain initial access, execute commands remotely, or extract sensitive credentials, potentially leading to ransomware deployment or lateral movement inside enterprise networks.
3 practical actions
- Patch immediately: Apply vendor fixes for SolarWinds Web Help Desk, Ivanti Endpoint Manager, and Workspace One UEM.
- Audit exposure: Identify any internet-facing or legacy instances of these products in your environment.
- Monitor for suspicious activity: Look for unusual authentication attempts, command execution, or outbound traffic linked to these systems.