9.8

CVE-2022-27518: Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability

CVSS: 9.8v3.1CriticalKEVAnalyzed
Published 13-12-2022Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2022-27518 is a critical (CVSS 9.8) vulnerability in Citrix Application Delivery Controller (ADC) and Gateway. It is known to be exploited: CISA lists it, first on 13-12-2022. EPSS estimates a 6.86% chance of exploitation in the next 30 days, higher than 93.9% of scored vulnerabilities.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
6.86%
0%100%
Low · -0.02 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-12-2022
    PublishedVulnerability first disclosed.
  2. 13-12-2022
    Added to CISA KEVCitrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability
  3. 03-01-2023
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

Unauthenticated remote arbitrary code execution

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

6.86%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

-0.02 pp

From 6.88% on 18-09-2026

18-09-202618-10-2026
EPSS score
6.86%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
13-12-2022
Federal due date
03-01-2023

CISA required action

Apply updates per vendor instructions. www.citrix.com/blogs/… nvd.nist.gov/vuln/detail/CVE-2022-27518

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Citrix3 products

1 vendor · 3 products

References

2 links