Cyber Resilience

CVE-2024-29988

HighCISA KEVActive ExploitationEUVD Exploited

Published: 09 April 2024

Published
09 April 2024
Modified
28 October 2025
KEV Added
30 April 2024
Patch
CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.6277 98.4th percentile
Risk Priority 75 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-29988 is a high-severity Protection Mechanism Failure (CWE-693) vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 1.6% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and SI-3 (Malicious Code Protection).

Deeper analysis

CVE-2024-29988 is a SmartScreen Prompt Security Feature Bypass Vulnerability affecting Microsoft Windows components responsible for displaying security warnings on potentially malicious downloads or web content. The flaw carries a CVSS 3.1 score of 8.8 and is associated with CWE-693, indicating an improper protection mechanism that can be circumvented under network-based attack conditions requiring only user interaction.

An unauthenticated remote attacker can exploit the issue by serving specially crafted content that causes the SmartScreen prompt to be bypassed. Successful exploitation grants the attacker confidentiality, integrity, and availability impacts equivalent to arbitrary code execution or full compromise of the affected system.

Microsoft’s update guide provides patches addressing the bypass, while CISA has added the CVE to its Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. The associated EPSS score has reached a peak of 0.6684 with a current value of 0.6277, reflecting sustained exploitation interest following disclosure.

EU & UK References

Vulnerability details

SmartScreen Prompt Security Feature Bypass Vulnerability

CWE(s)
KEV Date Added
30 April 2024

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

microsoft
windows 10 1809
≤ 10.0.17763.5696 · ≤ 10.0.17763.5696 · ≤ 10.0.17763.5696
microsoft
windows 10 21h2
≤ 10.0.19044.4291
microsoft
windows 10 22h2
≤ 10.0.19045.4291
microsoft
windows 11 21h2
≤ 10.0.22000.2899
microsoft
windows 11 22h2
≤ 10.0.22621.3447
microsoft
windows 11 23h2
≤ 10.0.22631.3447
microsoft
windows server 2019
≤ 10.0.17763.5696
microsoft
windows server 2022
≤ 10.0.20348.2402
microsoft
windows server 2022 23h2
≤ 10.0.25398.830

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly requires timely application of Microsoft patches that close the SmartScreen bypass flaw before exploitation succeeds.

prevent

Requires the malicious-code protection capability (SmartScreen) whose prompt-bypass is the root cause of this CVE.

preventdetect

Mandates integrity verification of downloaded content and executables that the bypassed SmartScreen prompt was intended to protect.

References