Microsoft November 2024: 2 actively exploited zero-days
Microsoft Windows
CVE-2024-43451: Microsoft Windows contains an NTLMv2 hash spoofing vulnerability that could result in disclosing a user's NTLMv2 hash to an attacker via a file open operation. The attacker could then leverage this hash to impersonate that user. CVE-2024-49039: 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. Added to the CISA KEV catalog on 2024-11-12. CISA lists known use in ransomware campaigns.
Why this severity: CVSS 8.8 (v3.1, CNA), actively exploited (CISA KEV); known ransomware use
- Started
- Nov 12, 2024
- Closed
- Nov 12, 2024
Affected
- See vendor advisory (versions are not listed in the KEV record)
Fixed in
- See vendor advisory linked in sources
Timeline4
Advisories5
Notes & caveats
Derived from the CISA KEV JSON feed (catalogVersion 2026.10.21); CVSS from the CVE record (cveawg.mitre.org). startedAt is the CVE publication date when it fell in 2024 before the KEV listing, else the KEV dateAdded; exploitation may have begun earlier. closedAt is the KEV listing date (a fix or mitigation was available then unless noted).
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