Name: CVE-2025-6543: Improper Restriction of Operations within the Bounds of a Memory Buffer
Creator: Rapid7
Published: 2025-06-25T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2025-6543, CWE-119, Exploited in the Wild, CISA KEV Exploit, Rapid7 Critical, CVSS 9.8, EPSS 0.10562, CISA KEV

Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server

CVSS Details

CVSS 4.0 Base Score: 9.2 (CRITICAL)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Citrix Adc	—	Upgrade to the latest available version of Citrix ADC	Jun 25, 2025	Jun 25, 2025

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CVSS Details

Covered by Rapid7

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