CVE-2022-27516 [Medium] | Security Bypass in Gateway

CVE-2022-27516 is rated Low Risk (37/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.60%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.09%	0.60%	+0.51%
2	2026-06-09	0.15%	0.09%	-0.06%
3	2026-01-19	—	0.15%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.09%

0.60%

+0.51%

2026-06-09

0.15%

0.09%

-0.06%

2026-01-19

—

0.15%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.3	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	3.9	1.4	[email protected]
9.8	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.3

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

3.9

1.4

[email protected]

9.8

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

5.9

[email protected]

Affected software / configurations for CVE-2022-27516

Vendor	Product	Version	Raw CPE
citrix	gateway	>= 12.1, < 12.1-65.21	cpe:2.3:a:citrix:gateway::::::::
citrix	gateway	>= 13.0, < 13.0-88.12	cpe:2.3:a:citrix:gateway::::::::
citrix	gateway	>= 13.1, < 13.1-33.47	cpe:2.3:a:citrix:gateway::::::::
citrix	application_delivery_controller_firmware	>= 12.1, < 12.1-65.21	cpe:2.3:o:citrix:application_delivery_controller_firmware:::::-:::*
citrix	application_delivery_controller_firmware	>= 13.0, < 13.0-88.12	cpe:2.3:o:citrix:application_delivery_controller_firmware:::::-:::*
citrix	application_delivery_controller_firmware	>= 13.1, < 13.1-33.47	cpe:2.3:o:citrix:application_delivery_controller_firmware:::::-:::*
citrix	application_delivery_controller_firmware	>= 12.1, < 12.1-55.289	cpe:2.3:o:citrix:application_delivery_controller_firmware:::::fips:::*
citrix	application_delivery_controller_firmware	>= 12.1, < 12.1-55.289	cpe:2.3:o:citrix:application_delivery_controller_firmware:::::ndcpp:::*

References for CVE-2022-27516

URL	Tags
https://support.citrix.com/article/CTX463706/citrix-gateway-and-citrix-adc-security-bulletin-for-cve202227510-cve202227513-and-cve202227516	Vendor Advisory

URL

CVE-2022-27516 | User login brute force protection functionality bypass

Exploit prediction scoring system (EPSS) score for CVE-2022-27516

Common vulnerability scoring system (CVSS) metrics for CVE-2022-27516

Weakness enumeration for CVE-2022-27516

Affected software / configurations for CVE-2022-27516

References for CVE-2022-27516