CVE-2020-8195
MediumExploitedPublic exploitImproper 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 in limited information disclosure to low privileged users.
Published Jul 10, 2020 · Updated Oct 30, 2025
Key Facts
Patch immediately- CVE-2020-8195 is a medium-severity vulnerability (CVSS 6.5 v3.1) affecting Gateway Plug-In For Linux (Citrix), Application Delivery Controller Firmware (Citrix), Gateway Firmware (Citrix) and 3 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 15, 2020 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 33% probability of exploitation in the next 30 days.
- Fixed versions are available, including Application Delivery Controller Firmware 10.5-70.18, Gateway Firmware 13.0-58.30, Gateway Plug-In For Linux 1.0.0.137.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
33%
Higher than 98.3% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2020-8195 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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 in limited information disclosure to low privileged users.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 3, 2021 | May 3, 2022 | Not reported |
| Industry KEV feed | Sep 15, 2020 | May 3, 2022 | Known |
| CIRCL KEV | Nov 3, 2021 | May 3, 2022 | Not reported |
| ENISA EUVD | Nov 3, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Gateway Plug-In For LinuxCitrix | See advisory | 1.0.0.137 |
| Application Delivery Controller FirmwareCitrix | See advisory | 10.5-70.18 |
| Gateway FirmwareCitrix | See advisory | 13.0-58.30 |
| Netscaler Gateway FirmwareCitrix | See advisory | 10.5-70.18 |
| SD-WAN WanopCitrix | See advisory | 10.2.7 |
Patched Releases
Application Delivery Controller Firmware
10.5-70.18
Gateway Firmware
13.0-58.30
Gateway Plug-In For Linux
1.0.0.137
Netscaler Gateway Firmware
10.5-70.18
SD-WAN Wanop
10.2.7
Timeline
Publicly disclosed
Jul 10, 2020
Added to Industry KEV feed
Sep 15, 2020
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Oct 30, 2025
Weakness Type
- CWE-20 Improper Input Validation
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
- advisoryhttps://support.citrix.com/article/CTX276688
- exploithttp://packetstormsecurity.com/files/160047/Citrix-ADC-NetScaler-Local-File-Inclusion.html
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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 in limited information disclosure to low privileged users.
Affected: Gateway Plug-In For Linux (Citrix); Application Delivery Controller Firmware (Citrix); Gateway Firmware (Citrix), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 15, 2020 and is known to be used in ransomware campaigns.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of May 3, 2022.
Public exploit code is available.
Fixed versions are available, including Application Delivery Controller Firmware 10.5-70.18, Gateway Firmware 13.0-58.30, Gateway Plug-In For Linux 1.0.0.137.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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