ClosedPatched

Citrix NetScaler: NetScaler Memory Overflow Vulnerability

Citrix NetScaler

Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service. Added to CISA KEV on 2025-08-26.

Why this severity: CVSS 9.2 (CNA, v4.0); actively exploited (CISA KEV)

Started: Aug 26, 2025
Closed: Aug 26, 2025
CVE: CVE-2025-7775

Follow this incident

Updated Aug 26, 2025

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Aug 26, 2025
CISA added CVE-2025-7775 to the KEV catalog (due 2025-08-28).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

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