CVE-2020-8193Known exploitationPublic exploitNetwork attack vector

Unauthorized endpoint access via forged administrative session

Published Jul 10, 2020 · Updated Oct 21, 2025

Authorization bypass in Citrix ADC, Gateway, and SDWAN WAN-OP allows remote attackers to access protected endpoints via crafted HTTP requests. The /pcidss/report and /menu/ss handlers establish a session using attacker-supplied identity parameters without valid credentials. Exploitation requires connectivity to the NetScaler IP management interface; arbitrary file disclosure reported in public demonstrations involves chaining a separate flaw.

CVSS severity6.5
Medium
EPSS probability88.27%
Next 30 days · Nov 1, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Citrix ADC, Gateway, and SDWAN WAN-OP allows remote attackers to access protected endpoints via crafted HTTP requests. The /pcidss/report and /menu/ss handlers establish a session using attacker-supplied identity parameters without valid credentials. Exploitation requires connectivity to the NetScaler IP management interface; arbitrary file disclosure reported in public demonstrations involves chaining a separate flaw.

The record

CVE
CVE-2020-8193
Published
Jul 10, 2020
Updated
Oct 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsShadowserver observations through Sep 28, 2026. Gaps indicate unavailable data.
Sep 22, 2026Sep 28, 2026
View daily counts
Reporting dayUnique IPs
Sep 22, 202612
Sep 23, 20268
Sep 24, 202612
Sep 25, 202628
Sep 26, 20269
Sep 27, 202624
Sep 28, 202614
Latest reporting daySep 28, 2026
Latest daily unique IPs14
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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