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Fencer Vulns
critical 9.8

CVE-2022-27518 kev in the critical feed json

Unauthenticated remote arbitrary code execution

published 2022-12-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-32019

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2022-12-13
epss
6.9%
EPSS 6.9% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Unauthenticated remote arbitrary code execution

Patch / fix

cisa required action Apply updates per vendor instructions.

  • citrix application_delivery_controller_firmware 12.1-55.291, 12.1-65.25, 13.0-58.32
  • citrix gateway_firmware 12.1-65.25, 13.0-58.32

Timeline

  1. Published
  2. 0-day patched (Project Zero)
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
3 y ago
Patch by
2023-01-03 (3 y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Citrix, Application Delivery Controller (ADC) and Gateway
CISA name
Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2022-12-13
Details
project zero tracker

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

6.86% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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-664 Improper Control of a Resource Through its Lifetime
Technology feeds

References

Sources

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.