CVE-2026-8452
Improper Restriction of Operations within the Bounds of a Memory Buffer in Citrix NetScaler ADC and NetScaler Gateway. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 26 August 2026.
- Product
- Citrix NetScaler ADC and NetScaler Gateway
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability which could lead to denial of service.
More from Citrix this year.
- CVE-2026-88779 Improper Restriction of Operations within the Bounds of a Memory Buffer, added
- CVE-2026-88772 Improper Restriction of Operations within the Bounds of a Memory Buffer, added
- CVE-2026-88771 Improper Input Validation, added
- CVE-2026-19490 Authentication Bypass Using an Alternate Path or Channel, added
- CVE-2026-3055 Out-of-Bounds Read, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.