CVE-2023-36883
Published: 14 July 2023
Summary
CVE-2023-36883 is a medium-severity Authentication Bypass by Spoofing (CWE-290) vulnerability in Microsoft Edge. Its CVSS base score is 4.3 (Medium).
Operationally, ranked at the 48.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-36883 is a spoofing vulnerability affecting Microsoft Edge for iOS, assigned a CVSS 3.1 base score of 4.3 with the vector AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N and associated with CWE-290. The issue was published on 2023-07-14.
An unauthenticated remote attacker can exploit the flaw by delivering a crafted link or webpage that requires user interaction, resulting in limited integrity impact without affecting confidentiality or availability.
The EPSS score started low, rose materially to a peak of 0.0741 on 2025-01-22, and has since receded to 0.0025, indicating a period of increased exploitation interest after disclosure. The primary advisory reference is available at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36883.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-40803
Vulnerability details
Microsoft Edge for iOS 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.