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CVE-2022-27518

Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass

9.8 CRITICALActively exploited (CISA KEV)EPSS 6.68%
  1. Published13 Dec 2022
  2. Added to CISA KEV13 Dec 2022
  3. Remediation due3 Jan 2023
Actively exploited (CISA KEV)

Citrix Application Delivery Controller (ADC) and Gateway, when configured with SAML SP or IdP configuration, contain an authentication bypass vulnerability that allows an attacker to execute code as administrator.

Added to KEV: 13 Dec 2022Federal remediation due: 3 Jan 2023

Description

Unauthenticated remote arbitrary code execution

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Citrix Application Delivery Controller Firmware≥ 12.1 < 12.1-65.25 · ≥ 13.0 < 13.0-58.32 · ≥ 12.1 < 12.1-55.291
Citrix Gateway Firmware≥ 12.1 < 12.1-65.25 · ≥ 13.0 < 13.0-58.32

Remediation

Fixed in
Citrix Application Delivery Controller Firmware≥ 12.1-65.25
Citrix Gateway Firmware≥ 12.1-65.25

References

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Frequently asked

Is CVE-2022-27518 being actively exploited?

Yes. CVE-2022-27518 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 13 Dec 2022.

How severe is CVE-2022-27518?

CVE-2022-27518 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 6.68% probability of exploitation.

Which products are affected by CVE-2022-27518?

Affected products include Citrix Application Delivery Controller Firmware, Citrix Gateway Firmware.

How do I fix CVE-2022-27518?

Upgrade affected software to a fixed version, for example Citrix Application Delivery Controller Firmware 12.1-65.25, Citrix Gateway Firmware 12.1-65.25 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-27518 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.