CVE-2022-35770
Published: 11 October 2022
Summary
CVE-2022-35770 is a medium-severity Authentication Bypass by Spoofing (CWE-290) vulnerability in Microsoft Windows 10. Its CVSS base score is 6.5 (Medium).
Operationally, ranked in the top 4.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2022-35770 is an NTLM spoofing vulnerability affecting the Windows implementation of the NTLM authentication protocol. It carries a CVSS 3.1 base score of 6.5 and is classified under CWE-290 (Authentication Bypass by Spoofing), indicating that an attacker can cause the protocol to accept forged credentials under certain conditions.
An unauthenticated remote attacker can exploit the flaw by sending a crafted NTLM authentication request that requires user interaction on the target system. Successful exploitation allows the attacker to obtain sensitive information from the affected Windows host without needing prior credentials or elevated privileges.
Microsoft security advisories for CVE-2022-35770, published on 11 October 2022, direct administrators to the vendor’s update guide and recommend applying the patches referenced in those bulletins to address the spoofing issue. The associated EPSS score has remained steady at 0.1860 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-38643
Vulnerability details
Windows NTLM 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.