Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:LCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-24880 is a medium-severity Incorrect Authorization (CWE-863) vulnerability in Microsoft Windows 10 1607. Its CVSS base score is 4.4 (Medium).
Operationally, ranked in the top 0.4% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
Windows SmartScreen contains a security feature bypass vulnerability tracked as CVE-2023-24880. The flaw resides in the SmartScreen component of Windows and received a CVSS 4.4 rating reflecting local attack vector, low complexity, no required privileges, and user interaction. It is also associated with CWE-863, indicating improper authorization checks that allow the security control to be circumvented.
An attacker with the ability to execute code on a target system can present specially crafted content that SmartScreen fails to evaluate correctly. Successful exploitation permits limited tampering with integrity and availability properties while bypassing the normal warning or blocking behavior that SmartScreen is intended to enforce.
Microsoft’s security update guide provides patches addressing the issue, and the vulnerability appears in CISA’s catalog of known exploited vulnerabilities, confirming that remediation guidance and fixes have been published through official channels.
EPSS scores for the CVE rose from lower values to a recorded peak of 0.7729 on 2025-12-11 before receding to the current 0.7464, indicating measurable post-disclosure exploitation interest that warrants attention from defenders.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-28870
Vulnerability Data
Windows SmartScreen Security Feature Bypass Vulnerability
- CWE(s)
- KEV Date Added
- 14 March 2023
Related Threats
CVEs Like This One
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.
Periodic review and update of procedures reduces incorrect authorization implementations over time.
Supervision identifies cases where authorization logic incorrectly permits unauthorized actions.
Defining permitted attribute values and auditing modifications reduces the chance of incorrect authorization outcomes due to tampered or missing labels.
The authorization process and usage restrictions help prevent incorrect authorization for remote access types.
Establishing configuration and connection requirements helps ensure correct rather than incorrect authorization for wireless access.
Establishing connection authorization processes for mobile devices helps ensure authorization decisions are correctly implemented rather than incorrect.
Monitoring account use, notifying on changes, and reviewing accounts for compliance corrects incorrect authorization assignments.
Ensures authorization decisions for external system use are correctly implemented and enforced.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Requiring consistency between access rights and classification plus formal approval steps ensures that the authorization logic correctly distinguishes between entities that should and should not be granted access.
A.5.18's provisioning, revocation, review and adjustment of access rights (incl. before role changes/termination, with segregation and owner approval) directly stops incorrect authorization decisions from being exploitable in the vast majority of cases; the bounded remainder is incorrectness inside the authorization logic itself (e.g. flawed conditional or missing check) rather than rights that were wrongly granted.
A.8.3 directly mandates restricting access to information per policies via configuration, identity/group controls, isolation, and dynamic techniques that enforce correct authorization decisions, addressing most but not all slices of CWE-863 (e.g., remainder in non-access-decision authorization errors like timing or environmental factors).
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-863, a class-level weakness, and none of its children carries one either.