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CVE-2022-27518

72
FAUCET Score

CVE-2022-27518 is a critical unauthenticated remote arbitrary code execution vulnerability affecting Citrix Application Delivery Controller (ADC) and Gateway products. With a CVSS score of 9.8, it allows unauthenticated attackers to execute arbitrary code remotely with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. This vulnerability is actively exploited in the wild, as confirmed by its presence in the KEV catalog and multiple media reports, including exploitation by APT5. Despite the lack of public exploit code in Metasploit, Nuclei, or ExploitDB, its high FAUCET Risk Score of 99/100 and significant community discussion highlight the urgent need for patching.

Impacted Technologies

VendorProductVersion(s)CPE
>= 12.1, < 12.1-55.291CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:fips:*:*:*
>= 12.1, < 12.1-55.291CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:ndcpp:*:*:*
>= 12.1, < 12.1-65.25CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
>= 13.0, < 13.0-58.32CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
>= 12.1, < 12.1-65.25CPE matchmatch criteria
cpe:2.3:o:citrix:gateway_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.88%
Probability of exploitation in next 30 days
EPSS Percentile
93.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Dec 13, 2022
This CVE's current EPSS score of 0.0688 is in the 88th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

citrixvendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
support.citrix.com / article/CTX474995
Vendor Advisory