CVE-2022-27518
Citrix Application Delivery Controller Firmware 12.1 – 12.1-55.291
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2022-27518 is a critical-severity Improper Control of a Resource Through its Lifetime (CWE-664) vulnerability in Citrix Application Delivery Controller Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Process Injection (T1055); ranked in the top 7% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2022-27518 is an unauthenticated remote arbitrary code execution vulnerability carrying a CVSS 3.1 score of 9.8. The affected component is a Citrix product, as documented in the vendor advisory CTX474995.
An attacker can exploit the flaw over the network without any credentials or user interaction, resulting in full compromise of confidentiality, integrity, and availability on the target system.
The Citrix support article CTX474995 and the CISA Known Exploited Vulnerabilities catalog both address the issue, directing administrators to available patches and remediation steps.
The vulnerability appears in the CISA catalog, confirming observed exploitation in the wild, while its EPSS score has remained flat at a peak of 0.2769.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-32019
Vulnerability Data
Unauthenticated remote arbitrary code execution
- CWE(s)
- KEV Date Added
- 13 December 2022
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
—
—
- 4 hardening rules · 3 OS baselines
—
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requires a managed development lifecycle process with integrity controls on changes, improving control of resources throughout their lifetime.
Requires designing resource lifetime controls that anticipate, withstand, and recover from stresses or attacks, mitigating improper resource control.
Directly enforces limited resource lifetime by requiring initiation from a known state and explicit termination, shrinking the window any long-lived resource weakness can be exploited.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Directly requires managing assets through creation, use, and disposal phases, preventing lifetime control failures.
Enforces consistent configuration and handling rules that reduce improper resource lifetime management.
Integrates secure practices across the full development lifecycle, addressing resource creation-to-release control.
Covers ongoing maintenance and removal of software, indirectly limiting resource lifetime issues.
Addresses hardware maintenance and replacement phases that intersect with resource lifetime control.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Information deletion control ensures proper release and sanitization at end of life.
Secure SDLC embeds resource lifecycle controls from design through decommissioning.
Secure architecture principles reduce lifetime control issues but are not specific to them.
Secure coding practices help avoid lifetime control bugs but do not address the full scope.
Configuration management enforces lifecycle rules for resource creation, use and disposal.
Backups preserve resources but do not govern their full lifetime control.
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).
Windows Server 2016 (2 rules)
- V-224971 The Active Directory SYSVOL directory must have the proper access control permissions. prevents CWE-664
- V-224970 Permissions on the Active Directory data files must only allow System and Administrators access. prevents CWE-664
Windows Server 2019 (1 rule)
- V-205739 Windows Server 2019 permissions on the Active Directory data files must only allow System and Administrators access. prevents CWE-664