Threats / Citrix / CVE-2020-8193
CVE-2020-8193
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Citrix Application Delivery Controller (ADC), Gateway, and S vulnerability
Citrix ADC, Gateway, and SD-WAN WANOP appliances contain an authorization bypass allowing unauthenticated access to certain URL endpoints when the attacker has network access to the NetScaler IP.
Verdict
Today item — known-exploited.
An unauthenticated attacker with network access to the management interface can bypass authorization controls to access restricted endpoints, potentially leading to information disclosure or further system compromise.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
616 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03).
Probability (EPSS)
EPSS 0.88411 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Citrix, Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-284 Improper Access Control — weakness family: Authorization / access control.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
Gain network access to the NetScaler IP management interface
Business
Perimeter security assumes internal network is trusted; exposed management interfaces become attack surface
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
Craft requests to protected URL endpoints without valid authentication credentials
Business
Authorization controls fail to enforce access restrictions, violating principle of least privilege
3
Lateral reach — past segmentation narrative 3
Attacker
Access sensitive configuration, operational data, or system information from restricted endpoints
Business
Confidential appliance settings and operational details are exposed to unauthorized parties
4
Data at risk — exfiltration narrative 4
Attacker
Use disclosed information to identify further vulnerabilities or misconfigurations
Business
Information disclosure enables reconnaissance for lateral movement or privilege escalation attacks
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05