Skip to content
Fencer Intel
medium 6.5

CVE-2020-8195 kev in the critical feed json

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 an…

published 6y ago modified 4mo ago also EUVD-2020-29072

cvss
6.5
version 3.1, CNA
cisa kev
Exploited
added 2021-11-03
epss
33.0%
EPSS 33.0% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

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.

Patch / fix

cisa required action Apply updates per vendor instructions.

  • citrix gateway_plug-in_for_linux 1.0.0.137
  • citrix application_delivery_controller_firmware 10.5-70.18, 11.1-64.14, 12.0-63.21, 12.1-57.18, 13.0-58.30
  • citrix netscaler_gateway_firmware 10.5-70.18, 11.1-64.14, 12.0-63.21, 12.1-57.18
  • citrix gateway_firmware 13.0-58.30
  • citrix sd-wan_wanop 10.2.7, 11.0.3d, 11.1.1a

Is CVE-2020-8195 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Timeline

  1. Published
  2. Added to CISA KEV
  3. CISA patch deadline
  4. CISA SSVC: exploitation active

Known exploited

Added
5y ago
Patch by
2022-05-03 (4y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Citrix, Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance
CISA name
Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1056 Input Capture exploitation
  • T1005 Data from Local System primary impact
  • T1082 System Information Discovery primary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

33.03% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • packetstormsecurity.com http://packetstormsecurity.com/files/160047/Citrix-ADC-NetScaler-Local-File-Inclusion.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

  • n/a Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.