SQL Server Elevation of Privilege Vulnerability in Input Type Validation
CVE-2026-26115 is an elevation of privilege vulnerability in Microsoft SQL Server caused by improper validation of a specified type of input. The available source material identifies the weakness as CWE-1287 and states that the flaw is reachable over the network by an authorized attacker. Microsoft characterizes the issue as improper input validation in SQL Server, but the specific vulnerable function, component, or code path is not provided in the supplied content. The CVSS v3.1 vector provided is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating low attack complexity, low privileges required, no user interaction, and high potential impact to confidentiality, integrity, and availability.
Are you exposed to this one?
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.
Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
9 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.
The version that knows your environment.
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.