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CVE-2025-5777: NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread

9.3 CVSS

Description

Insufficient input validation leading to memory overread on the NetScaler Management Interface NetScaler ADC and NetScaler Gateway

Known Exploited

🚨 Marked as known exploited on June 27th, 2025 (3 days ago).

Classification

CVE ID: CVE-2025-5777

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.3

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Problem Types

CWE-125 Out-of-bounds Read

Affected Products

Vendor: NetScaler

Product: ADC, Gateway

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.06% (probability of being exploited)

EPSS Percentile: 17.4% (scored less or equal to compared to others)

EPSS Date: 2025-06-30 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-5777
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420

Timeline