User login brute force protection functionality bypass

published 2022-11-08 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-32017

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

Patch / fix

fixed in 2

citrix gateway 12.1-65.21, 13.0-88.12, 13.1-33.47
citrix application_delivery_controller_firmware 12.1-55.289, 12.1-65.21, 13.0-88.12, 13.1-33.47

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-05-01)

Exploit prediction

0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Citrix Citrix Gateway, Citrix ADC

Classification

Weakness

CWE-693 Protection Mechanism Failure
CWE-307 Improper Restriction of Excessive Authentication Attempts

Technology feeds

Citrix rss critical rss

References

support.citrix.com /article/CTX463706/citrix-gateway-and-citrix-adc-security-bulletin-for-cve202227510-cve202227513-and-cve202227
vendor-advisory

Sources

CVE List CVE-2022-27516
NVD CVE-2022-27516

Fencer Vulns 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.

Summary