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CVE-2026-26115 is an elevation-of-privilege vulnerability in Microsoft SQL Server caused by improper validation of a specified type of input. The flaw is reachable over the network by an authorized attacker and arises from insufficient enforcement of expected input type constraints within SQL Server processing. Microsoft classifies the issue as important, and available metadata indicates a CVSS v3.1 vector of AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Successful exploitation can allow an attacker with low privileges to elevate privileges within the SQL Server environment, potentially reaching administrator-level permissions.
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What an attacker gets, and what they’ve been doing with it.
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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.
A privilege escalation vulnerability in Microsoft SQL Server caused by improper validation of a specified input type, allowing an authorized attacker to elevate privileges over the network.
An important SQL Server elevation of privilege vulnerability caused by improper input validation that could allow an authorized attacker to gain administrator privileges over a network.
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.