Netscaler Gateway Firmware vulnerabilitiesAnd the versions its exploited flaws hit.

Product4 known exploited35 versions
The short answer

Netscaler Gateway Firmware is made by Citrix. We track 31 published vulnerabilities in it, across 35 versions. 4 of them are on the list of flaws known to be exploited, the newest added on 3 November 2021. If you run Netscaler Gateway Firmware, check your version against the exploited flaws below and patch those first.

Check your version

The most recent Netscaler Gateway Firmware flaw added to the known-exploited list is CVE-2019-19781, on 3 November 2021. We keep watching the known-exploited list.

Versions

Which versions of Netscaler Gateway Firmware do the exploited flaws hit?

Each exploited flaw lists the versions it affects, usually as ranges. "10.5 to before 10.5-70.18" means from 10.5 up to, but not including, 10.5-70.18. Find your version, then patch.

  • CVE-2019-19781Exploited list, 3 Nov 2021

    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability

    10.511.112.012.1
  • CVE-2020-8193Exploited list, 3 Nov 2021

    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerability

    10.5 to before 10.5-70.1811.1 to before 11.1-64.1412.0 to before 12.0-63.2112.1 to before 12.1-57.18
  • CVE-2020-8195Exploited list, 3 Nov 2021

    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability

    10.5 to before 10.5-70.1811.1 to before 11.1-64.1412.0 to before 12.0-63.2112.1 to before 12.1-57.18
  • CVE-2020-8196Exploited list, 3 Nov 2021

    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability

    10.5 to before 10.5-70.1811.1 to before 11.1-64.1412.0 to before 12.0-63.2112.1 to before 12.1-57.18
Known exploited

Which Netscaler Gateway Firmware vulnerabilities are being exploited?

4 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.

  1. 9.8
    CVE-2019-19781CriticalKnown exploited
    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability

    Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an unspecified vulnerability that could allow an unauthenticated attacker to perform code execution.

    Chance of use>99%Known exploited since3 Nov 2021
  2. 6.5
    CVE-2020-8193MediumKnown exploited
    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerability

    Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an authorization bypass vulnerability that may allow unauthenticated access to certain URL endpoints.

    Chance of use88%Known exploited since3 Nov 2021
  3. 6.5
    CVE-2020-8195MediumKnown exploited
    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability

    Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an information disclosure vulnerability.

    Chance of use33%Known exploited since3 Nov 2021
  4. 4.3
    CVE-2020-8196MediumKnown exploited
    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability

    Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an information disclosure vulnerability.

    Chance of use26%Known exploited since3 Nov 2021
Exploit likelihood

Which Netscaler Gateway Firmware 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. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. >99%
    CVE-2019-19781CriticalKnown exploited

    An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0.

    CVSS9.8Published27 Dec 2019
  2. 88%
    CVE-2020-8193MediumKnown exploited

    Improper access control in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows...

    CVSS6.5Published10 Jul 2020
  3. 33%
    CVE-2020-8195MediumKnown exploited

    Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 resulting...

    CVSS6.5Published10 Jul 2020
  4. 26%
    CVE-2020-8196MediumKnown exploited

    Improper access control in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 resulting in...

    CVSS4.3Published10 Jul 2020
  5. 23%

    Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows...

    CVSS6.1Published10 Jul 2020
  6. 14%

    Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 might allow remote attackers to...

    CVSS5.9Published13 Dec 2017
  7. 11%

    Reflected code injection in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows the...

    CVSS6.5Published10 Jul 2020
  8. 8.2%

    The AppFirewall functionality in Citrix NetScaler Application Delivery Controller and NetScaler Gateway 10.5 before Build 68.7, 11.0 before Build 71.24, 11.1 before Build 58.13, and 12.0 before Build 57.24 allows...

    CVSS9.8Published17 May 2018
  9. 4.9%

    A heap overflow vulnerability in Citrix NetScaler Gateway versions 10.1 before 135.8/135.12, 10.5 before 65.11, 11.0 before 70.12, and 11.1 before 52.13 allows a remote authenticated attacker to run arbitrary...

    CVSS8.8Published13 Apr 2017
  10. 4.6%

    Directory traversal vulnerability in NetScaler ADC 10.5, 11.0, 11.1, and 12.0, and NetScaler Gateway 10.5, 11.0, 11.1, and 12.0 allows remote attackers to traverse the directory on the target system via a crafted...

    CVSS7.5Published6 Mar 2018
EdgeProtect

Running Netscaler Gateway Firmware? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

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We track 31 published vulnerabilities listed under the name Netscaler Gateway Firmware, across 35 versions. The most recent Netscaler Gateway Firmware flaw added to the known-exploited list is CVE-2019-19781, on 3 November 2021.

4 are on the list of flaws known to be exploited. The most recently added are CVE-2019-19781, CVE-2020-8193 and CVE-2020-8195.

Each flaw names its own versions, usually as ranges. The newest, CVE-2019-19781, affects 10.5, 11.1, 12.0, 12.1. The versions for every exploited flaw are listed on this page.

Create a EdgeProtect account and track Netscaler Gateway Firmware. 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.