Loading vulnerability…
CVE-2019-1069 is a local elevation of privilege vulnerability in Microsoft Windows Task Scheduler Service caused by improper validation of certain file operations. Available reporting specifically associates the issue with the way the Task Scheduler service uses the SetJobFileSecurityByName() function. An attacker who already has the ability to run code as an unprivileged user on a target Windows system can exploit the flaw to cause the service to perform insufficiently validated file operations and thereby elevate privileges. Microsoft addressed the issue by correcting how Task Scheduler validates those file operations.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository, 'SharpPolarBear', is a weaponized C# implementation of the CVE-2019-0841 privilege escalation exploit for Microsoft Windows. The exploit is based on code from rasta-mouse's CollectorService and SandboxEscaper's original PoC, rewritten in C# and enhanced with additional checks. The exploit abuses a vulnerability in Windows scheduled tasks by creating a hardlink from 'C:\windows\system32\tasks' to a file in 'C:\windows\system32\', then leveraging scheduled tasks to escalate privileges to SYSTEM. The exploit includes embedded binaries (schtasks.exe, schedsvc.dll, and a job file) that are unpacked and used at runtime. The main entry point is likely 'Sharppolarbear/Program.cs'. The exploit must be run twice to achieve a SYSTEM shell. Windows Defender may detect and block the exploit due to its behavior. The repository is structured as a Visual Studio solution with two main projects: 'CollectorService' (a DLL) and 'Sharppolarbear' (the main executable). The exploit is operational and provides a working privilege escalation payload for vulnerable Windows systems.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows local privilege escalation vulnerability mentioned as one of PlayBit’s more recent exploit offerings, but not analyzed in depth in the article.
A Windows vulnerability mentioned only in passing as part of PlayBit’s broader exploit sales, not a focus of this article’s main exploit set.
A local elevation of privilege flaw in Windows Task Scheduler where improper validation of file operations allows an attacker with unprivileged code execution to gain elevated privileges. Affects multiple Windows 10 and Windows Server versions.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.