CVE-2022-34689
Published: 11 October 2022
Summary
CVE-2022-34689 is a high-severity Authentication Bypass by Spoofing (CWE-290) vulnerability in Microsoft Windows 10. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 6.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Windows CryptoAPI contains a spoofing vulnerability tracked as CVE-2022-34689 that affects the handling of cryptographic operations on Windows systems. The flaw is identified by CWE-290 and carries a CVSS 3.1 base score of 7.5, reflecting a network-accessible vector that requires no privileges or user interaction and produces a high integrity impact while leaving confidentiality and availability untouched.
An unauthenticated remote attacker can exploit the issue to spoof cryptographic identities or signatures, thereby undermining trust decisions that rely on CryptoAPI validation. Successful exploitation allows an adversary to inject or substitute material that the affected component will treat as authentic, enabling downstream integrity violations without any local foothold or user assistance.
Microsoft publishes mitigation guidance and patch information for this vulnerability through its Security Response Center at the listed advisory URLs. The EPSS score reached a peak of 0.1571 and currently stands at 0.1210, indicating moderate and sustained exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-37639
Vulnerability details
Windows CryptoAPI 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.