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CVE-2026-69449 is an Important heap-based buffer overflow in Windows BitLocker. Improper handling of data in heap memory can enable arbitrary code execution on affected Windows 10, Windows 11, and Windows Server releases, including applicable Server Core installations. Microsoft states that exploitation may be performed locally by an authorized attacker and may also be possible from the network through calls to arbitrary endpoints.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An Important-severity heap-based buffer-overflow vulnerability in Windows BitLocker that enables local and potentially network-reachable arbitrary code execution by an authorized attacker. Microsoft assessed exploitation as less likely and stated there was no evidence of in-the-wild exploitation before the September 8, 2026 advisory.
An Important heap-based buffer overflow in Microsoft Windows BitLocker that can enable local arbitrary code execution and may be reachable by an in-network attacker through arbitrary endpoint calls.
A heap-based buffer-overflow vulnerability in Windows BitLocker that permits an authorized local attacker to execute code.
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.