CVE-2023-35392
Published: 21 July 2023
Summary
CVE-2023-35392 is a medium-severity Authentication Bypass by Spoofing (CWE-290) vulnerability in Microsoft Edge Chromium. Its CVSS base score is 4.7 (Medium).
Operationally, ranked at the 34.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Deeper analysis
Microsoft Edge (Chromium-based) contains a spoofing vulnerability tracked as CVE-2023-35392. The flaw received a CVSS 4.7 rating reflecting a network vector, low attack complexity, no required privileges, and required user interaction that produces changed scope with limited integrity impact. It is also associated with CWE-290, indicating an authentication bypass by spoofing condition.
An unauthenticated remote attacker can exploit the issue by serving specially crafted web content that a user must visit. Successful exploitation allows the attacker to present misleading information to the victim within the browser, potentially bypassing intended security indicators or origin checks.
Microsoft’s Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35392 addresses the vulnerability and supplies the corresponding security update for Microsoft Edge.
The EPSS score for this CVE rose materially from a low baseline to a peak of 0.0741 on 2025-01-22 before receding to the current value of 0.0015, indicating that exploitation interest increased after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-39393
Vulnerability details
Microsoft Edge (Chromium-based) 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.