# NetScaler Gateway vulnerabilities > NetScaler Gateway is made by Citrix. We track 39 published vulnerabilities listed under that exact name, across 40 versions. 11 of them are on the list of flaws known to be exploited, the newest added on 26 August 2025. Citrix lists newer releases under their own names, such as Netscaler Gateway Firmware, so check those pages too. Canonical page: https://www.edgeprotect.io/product/citrix/netscaler_gateway ## At a glance - **Made by:** [Citrix](https://www.edgeprotect.io/vendors/citrix) - **Published vulnerabilities:** 39 - **Known to be exploited:** 11 (listed under the name NetScaler Gateway) - **Versions tracked:** 40 - **Most recently added to the known-exploited list:** [CVE-2025-7775](https://www.edgeprotect.io/what-is/cve-2025-7775), 26 August 2025. We keep watching the list. ## Is NetScaler Gateway listed under other names? Citrix also lists NetScaler Gateway under more specific names, such as Netscaler Gateway Firmware and Netscaler Gateway 11.0. Flaws listed only under those names are counted on their own pages, not here. - [Netscaler Gateway Firmware](https://www.edgeprotect.io/product/citrix/netscaler_gateway_firmware): 31 published vulnerabilities - [Netscaler Gateway 11.0](https://www.edgeprotect.io/product/citrix/netscaler_gateway_11.0): 1 published vulnerability - [Netscaler Gateway 11.0 Firmware](https://www.edgeprotect.io/product/citrix/netscaler_gateway_11.0_firmware): 1 published vulnerability ## Which versions of NetScaler Gateway do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "13.1 to before 13.1-59.22" means from 13.1 up to, but not including, 13.1-59.22. - [CVE-2025-7775](https://www.edgeprotect.io/what-is/cve-2025-7775) (Citrix NetScaler Memory Overflow Vulnerability): 13.1 to before 13.1-59.22, 14.1 to before 14.1-47.48 - [CVE-2025-5777](https://www.edgeprotect.io/what-is/cve-2025-5777) (Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability): 13.1 to before 13.1-58.32, 14.1 to before 14.1-43.56 - [CVE-2025-6543](https://www.edgeprotect.io/what-is/cve-2025-6543) (Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability): 13.1 to before 13.1-59.19, 14.1 to before 14.1-47.46 - [CVE-2023-6548](https://www.edgeprotect.io/what-is/cve-2023-6548) (Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability): 13.0 to before 13.0-92.21, 13.1 to before 13.1-51.15, 14.1 to before 14.1-12.35 - [CVE-2023-6549](https://www.edgeprotect.io/what-is/cve-2023-6549) (Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability): 13.0 to before 13.0-92.21, 13.1 to before 13.1-51.15, 14.1 to before 14.1-12.35 - [CVE-2023-4966](https://www.edgeprotect.io/what-is/cve-2023-4966) (Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability): 13.0 to before 13.0-92.19, 13.1 to before 13.1-49.15, 14.1 to before 14.1-8.50 - [CVE-2023-3519](https://www.edgeprotect.io/what-is/cve-2023-3519) (Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability): 13.0 to before 13.0-91.13, 13.1 to before 13.1-49.13 4 more exploited flaws name NetScaler Gateway without a version of its own (for example as the system other affected software runs on). They are in the list below. ## Which NetScaler Gateway vulnerabilities are being exploited? 11 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2025-7775](https://www.edgeprotect.io/what-is/cve-2025-7775): Citrix NetScaler Memory Overflow Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 19%, known exploited since 26 August 2025. - [CVE-2025-5777](https://www.edgeprotect.io/what-is/cve-2025-5777): Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability. High, CVSS 7.5, chance of use in 30 days >99%, known exploited since 10 July 2025. - [CVE-2025-6543](https://www.edgeprotect.io/what-is/cve-2025-6543): Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 9.8%, known exploited since 30 June 2025. - [CVE-2023-6548](https://www.edgeprotect.io/what-is/cve-2023-6548): Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability. Medium, CVSS 5.5, chance of use in 30 days 3.2%, known exploited since 17 January 2024. - [CVE-2023-6549](https://www.edgeprotect.io/what-is/cve-2023-6549): Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability. High, CVSS 8.2, chance of use in 30 days 58%, known exploited since 17 January 2024. - [CVE-2023-4966](https://www.edgeprotect.io/what-is/cve-2023-4966): Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability. Critical, CVSS 9.4, chance of use in 30 days >99%, known exploited since 18 October 2023. - [CVE-2023-3519](https://www.edgeprotect.io/what-is/cve-2023-3519): Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 19 July 2023. - [CVE-2019-19781](https://www.edgeprotect.io/what-is/cve-2019-19781): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 3 November 2021. - [CVE-2020-8196](https://www.edgeprotect.io/what-is/cve-2020-8196): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability. Medium, CVSS 4.3, chance of use in 30 days 26%, known exploited since 3 November 2021. - [CVE-2020-8195](https://www.edgeprotect.io/what-is/cve-2020-8195): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability. Medium, CVSS 6.5, chance of use in 30 days 33%, known exploited since 3 November 2021. - [CVE-2020-8193](https://www.edgeprotect.io/what-is/cve-2020-8193): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerability. Medium, CVSS 6.5, chance of use in 30 days 88%, known exploited since 3 November 2021. ## Which NetScaler Gateway flaws are most likely to be used? Ranked by the latest exploit-likelihood forecast (the chance each flaw is used in an attack in the next 30 days): - [CVE-2023-4966](https://www.edgeprotect.io/what-is/cve-2023-4966): >99%, Critical (CVSS 9.4), known exploited - [CVE-2019-19781](https://www.edgeprotect.io/what-is/cve-2019-19781): >99%, Critical (CVSS 9.8), known exploited - [CVE-2025-5777](https://www.edgeprotect.io/what-is/cve-2025-5777): >99%, High (CVSS 7.5), known exploited - [CVE-2023-3519](https://www.edgeprotect.io/what-is/cve-2023-3519): >99%, Critical (CVSS 9.8), known exploited - [CVE-2020-8193](https://www.edgeprotect.io/what-is/cve-2020-8193): 88%, Medium (CVSS 6.5), known exploited - [CVE-2023-6549](https://www.edgeprotect.io/what-is/cve-2023-6549): 58%, High (CVSS 8.2), known exploited - [CVE-2020-8195](https://www.edgeprotect.io/what-is/cve-2020-8195): 33%, Medium (CVSS 6.5), known exploited - [CVE-2020-8196](https://www.edgeprotect.io/what-is/cve-2020-8196): 26%, Medium (CVSS 4.3), known exploited - [CVE-2020-8191](https://www.edgeprotect.io/what-is/cve-2020-8191): 23%, Medium (CVSS 6.1) - [CVE-2025-7775](https://www.edgeprotect.io/what-is/cve-2025-7775): 19%, Critical (CVSS 9.8), known exploited ## Questions ### How many vulnerabilities does NetScaler Gateway have? We track 39 published vulnerabilities listed under the name NetScaler Gateway, across 40 versions. The most recent NetScaler Gateway flaw added to the known-exploited list is CVE-2025-7775, on 26 August 2025. ### Which NetScaler Gateway vulnerabilities are being exploited? 11 are on the list of flaws known to be exploited. The most recently added are CVE-2025-7775, CVE-2025-5777 and CVE-2025-6543. ### Why are newer NetScaler Gateway flaws missing from this page? Citrix also lists NetScaler Gateway under more specific names, such as Netscaler Gateway Firmware and Netscaler Gateway 11.0. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list. ### Which versions of NetScaler Gateway do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2025-7775, affects 13.1 to before 13.1-59.22, 14.1 to before 14.1-47.48. The versions for every exploited flaw are listed on this page. ### How do I get alerts for NetScaler Gateway? Create a EdgeProtect account and track NetScaler Gateway. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook. ## Running NetScaler Gateway? EdgeProtect keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.edgeprotect.io/register Book a demo: https://www.edgeprotect.io/contact