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CVE-2025-49719 is an information disclosure vulnerability in Microsoft SQL Server caused by improper input validation that can expose data from uninitialized memory. The flaw is remotely reachable over the network and does not require authentication, allowing an unauthorized attacker to trigger memory handling conditions in which residual, previously uninitialized data may be returned or disclosed. Available reporting consistently characterizes the issue as an uninitialized memory disclosure condition in SQL Server, with remediation also involving the Microsoft OLE DB Driver for SQL Server.
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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.
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.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An information disclosure vulnerability in Microsoft SQL Server reported as exploited.
An important-severity information disclosure vulnerability affecting Microsoft SQL Server that was publicly disclosed prior to patching.
An uninitialized memory disclosure vulnerability in Microsoft SQL Server that can be remotely triggered by unauthorized attackers.
An information disclosure vulnerability in Microsoft SQL Server.
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.