Citrix ADC and Citrix/NetScaler Gateway before 13.0-82.41, 12.1-62.23, 11.1-65.20 and Citrix ADC 12.1-FIPS before 12.1-55.238 suffer from i…

published 2021-06-16 5y ago modified 2026-06-17 4mo ago also EUVD-2020-29167

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.0%; EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits: 0; none known

Citrix ADC and Citrix/NetScaler Gateway before 13.0-82.41, 12.1-62.23, 11.1-65.20 and Citrix ADC 12.1-FIPS before 12.1-55.238 suffer from improper access control allowing SAML authentication hijack through a phishing attack to steal a valid user session. Note that Citrix ADC or Citrix Gateway must be configured as a SAML SP or a SAML IdP for this to be possible.

Patch / fix

fixed in 3

citrix gateway 12.1-62.23, 13.0-82.41
citrix netscaler_gateway 11.1-65.20
citrix application_delivery_controller_firmware 11.1-65.20, 12.1-55.238, 12.1-62.23, 13.0-82.41

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Exploit prediction

3.00% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

n/a Citrix ADC, Citrix Gateway

Classification

Weakness

CWE-284 Improper Access Control

Technology feeds

Citrix rss critical rss

References

support.citrix.com /article/CTX297155
vendor-advisory

Sources

CVE List CVE-2020-8300
NVD CVE-2020-8300

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