CVE-2025-6543
Memory overflow vulnerability leading to unintended control flow and Denial of Service
At a glance
- Source
- NVD
- EPSS
- EPSS 10.43 % · percentile 96 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Citrix
- NVD status
- Analyzed
Description
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
Weaknesses (CWE)
- CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | CRITICAL 9.2 | 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 | Citrix |
| CVSS 4.0 | CRITICAL 9.2 | 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 | NVD · secure@citrix.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2025-19085
- GCVE · GCVE-0-2025-6543
CERT-FR advisories
- CERTFR-2025-AVI-0540 — Multiples vulnérabilités dans les produits Citrix · cert.ssi.gouv.fr
- CERTFR-2025-ALE-009 — Multiples vulnérabilités dans Citrix NetScaler ADC et NetScaler Gateway · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*≥ 13.1 < 13.1-37.236cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*≥ 13.1 < 13.1-37.236cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*≥ 13.1 < 13.1-59.19cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*≥ 14.1 < 14.1-47.46cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*≥ 13.1 < 13.1-59.19cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*≥ 14.1 < 14.1-47.46
Affected products
| Product | Versions |
|---|---|
| NetScaler · ADC | affected 14.1 < 47.46 ; affected 13.1 < 59.19 ; affected 13.1 FIPS and NDcPP < 37.236 |
| NetScaler · Gateway | affected 14.1 < 47.46 ; affected 13.1 < 59.19 ; affected 13.1 FIPS and NDcPP < 37.236 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| CISA Known Exploited Vulnerabilities | CC0 1.0 |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |