CVE-2022-34716
Published: 09 August 2022
Summary
CVE-2022-34716 is a medium-severity Authentication Bypass by Spoofing (CWE-290) vulnerability in Microsoft Powershell. Its CVSS base score is 5.9 (Medium).
Operationally, ranked in the top 26.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2022-34716 is a spoofing vulnerability in .NET, carrying a CVSS 3.1 score of 5.9 with an attack vector of network, high attack complexity, no required privileges or user interaction, and high impact on confidentiality. The weakness is categorized under CWE-290, indicating an authentication bypass by spoofing.
An unauthenticated remote attacker can exploit the flaw over the network to spoof identities and obtain unauthorized access to confidential information, although successful exploitation requires overcoming high complexity conditions.
Microsoft has published official guidance for the issue in its security update guide at the referenced MSRC location.
The associated EPSS score rose materially from a low baseline to a peak of 0.0553 on 2025-01-22 before receding, indicating that exploitation interest emerged after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-0733
Vulnerability details
.NET Spoofing Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
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.
Reveals spoofed logon attempts through unexpected previous logon timestamps upon legitimate login.
Training specifically addresses recognizing spoofed communications and phishing that enable authentication bypass.
Requiring verifiable identity evidence at appropriate assurance levels makes it substantially harder for attackers to successfully spoof or impersonate users to obtain accounts.
Unique device authentication makes successful spoofing of device identity substantially more difficult to achieve.
Unique identification of non-organizational users reduces the feasibility of authentication bypass by spoofing.
Unique identification and authentication of services before communications makes spoofing of service identities substantially harder.
Isolated trusted path ensures the user interacts only with genuine system components, preventing spoofing of authentication interfaces or prompts.
Directly counters DNS response spoofing by requiring cryptographic origin authentication artifacts from the authoritative source.