What is CVE-2024-49039?
Windows Task Scheduler Elevation of Privilege Vulnerability
The record classifies CVE-2024-49039 under weakness class CWE-287. Its CVSS v3 base vector states that the flaw requires local access to the host, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 12 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 715 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 8.8 — HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C - EPSS (FIRST)
- 14.1% probability of exploitation in the next 30 days, higher than 96.5% of all scored CVEs
- CISA KEV
- Listed since 2024-11-12, federal remediation deadline 2024-12-03 — used in known ransomware campaigns
- Threadlinqs priority
- 10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
- Published
- 2024-11-12, last modified 2026-08-04
Is CVE-2024-49039 being exploited?
CISA added CVE-2024-49039 to the Known Exploited Vulnerabilities catalog on 2024-11-12, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2024-12-03 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2024-49039 is publicly available. 3 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 47 in the Threadlinqs vulnerability feed.
- je5442804/WPTaskScheduler_CVE-2024-49039 (github)
- razureink/cve-2024-49039-task_scheduler_eop_reproduction (github)
- trickest/cve (trickest)
Affected products and versions
- Microsoft: Windows Server 2025, Windows Server 2025 (Server Core installation), Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows 10 Version 21H2, Windows 11 version 22H2, Windows 10 Version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows Server 2022, 23H2 Edition (Server Core installation)
How to fix CVE-2024-49039
The record marks a vendor fix as available for CVE-2024-49039. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49039. Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49039. Because CVE-2024-49039 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2024-12-03. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2024-49039
1 tracked threat in the Threadlinqs corpus references CVE-2024-49039, either in the campaign’s CVE list or as an indicator on the campaign record.
- RomCom & Paper Werewolf Exploiting WinRAR CVE-2025-8088 Zero-Day via ADS Path Traversal — CRITICAL · 2026-02-04
Sources
Enriched from CVE.org, NVD, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.