CVE-2024-49039: in the CISA KEV catalogue
Microsoft Windows Task Scheduler Privilege Escalation Vulnerability. CISA added CVE-2024-49039 to the Known Exploited Vulnerabilities catalogue on 2024-11-12 with a default due date of 2024-12-03. Known ransomware campaign use: Known. Forensic triage flag: No.
Microsoft Windows Task Scheduler contains a privilege escalation vulnerability that can allow an attacker-provided, local application to escalate privileges outside of its AppContainer, and access privileged RPC functions. (CISA description)
- Vendor / product
- Microsoft Windows
- CWE
- CWE-287
- CISA required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS
- 14%, percentile 96 (scored 2026-11-03)
EPSS puts about 14 in 100 odds (14%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 96% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2024-49039 in the CISA KEV catalogue?
Yes. CISA added CVE-2024-49039 (Microsoft Windows Task Scheduler Privilege Escalation Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2024-11-12. CISA's default due date for it is 2024-12-03.
Is CVE-2024-49039 used in ransomware attacks?
CISA marks known ransomware campaign use as Known for CVE-2024-49039.
What should I do about CVE-2024-49039?
CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2024-49039