Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability (CVE-2019-19781)
Severity: critical · Patch status: patched · Since 2021-11-03 · CVE-2019-19781
Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an unspecified vulnerability that could allow an unauthenticated attacker to perform code execution. CISA added CVE-2019-19781 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by May 3, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
