ACTIVELY EXPLOITED3 sources verified·1 min read
By Lyrie Threat Intelligence·3/4/2024
CVE-2024-21338 added to CISA KEV: Microsoft Windows
Status: ✅ Confirmed exploited in the wild
Date added: 2024-03-04
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Due date: 2024-03-25
Why this matters
Microsoft Windows Kernel contains an exposed IOCTL with insufficient access control vulnerability within the IOCTL (input and output control) dispatcher in appid.sys that allows a local attacker to achieve privilege escalation.
Sources
Lyrie Verdict
Lyrie's autonomous detection layer catches active exploitation primitives at machine speed — closing the gap between disclosure and weaponization that traditional defense simply can't cover.
Validated sources
Related Articles
active exploitation
🚨 Overhyped vulnerability of the week: Severity inflation in Curl CVE-2026-10536 (Critical 9.8 CVSS, but no security im
1 min read · 1 sources
active exploitation
Black Hat USA 2026 Keynote Announcement!🔥Discover what lies ahead in security innovation. AI-driven systems are transfo
1 min read · 1 sources
active exploitation
CISA: CVE-2026-48939 added to Known Exploited Vulnerabilities — iCagenda iCagenda
1 min read · 3 sources