Threats / Microsoft / CVE-2024-29988
CVE-2024-29988
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft SmartScreen Prompt vulnerability
Microsoft SmartScreen Prompt security feature bypass allows attackers to circumvent Mark of the Web protections, enabling malicious file execution when chained with other vulnerabilities.
Verdict
Today item — known-exploited.
A security feature bypass in SmartScreen Prompt permits attackers to remove or bypass the Mark of the Web indicator, which can be combined with other CVEs to achieve arbitrary code execution on affected systems.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
4 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-04-30).
Probability (EPSS)
EPSS 0.45151 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, SmartScreen Prompt. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-693 Protection Mechanism Failure.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious file and deliver it to a target user.
Business
Delivery mechanisms for malware become more effective as security warnings are bypassed.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I remove or spoof the Mark of the Web indicator using the SmartScreen bypass.
Business
User trust in security indicators erodes, reducing detection of suspicious files.
3
Lateral reach — past segmentation narrative 3
Attacker
I chain this bypass with CVE-2023-38831 or CVE-2024-21412 to execute code.
Business
Endpoint systems become compromised through multi-stage attack chains that evade layered defenses.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05