CVE-2022-27518

Citrix Application Delivery Controller (ADC) and Gateway: Authentication Bypass

As of , CVE-2022-27518 in Citrix Application Delivery Controller (ADC) and Gateway is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 13 December 2022
US federal deadline
3 January 202321 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.07Higher than 93% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
No score that dayThe EPSS file of the day CISA listed it has no score for it.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: www.citrix.comLinks below, from CISA's entry.

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

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.

CISA's description

Unauthenticated remote arbitrary code execution

The CVE record's description, from Citrix

CVE published
13 December 2022
Assigned by
Citrix
CVSS
9.8 Critical (CVSS 3.1, from the CNA)
CWE-664
Improper Control of a Resource Through its Lifetime
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

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