Citrix NetScaler Memory Overflow Vulnerability (CVE-2025-7775)
Severity: critical · Patch status: unknown · Since 2025-08-26 · CVE-2025-7775
Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service. CISA added CVE-2025-7775 to its Known Exploited Vulnerabilities catalog on Aug 26, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Aug 28, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch