Loading vulnerability…
CVE-2026-21249 is a spoofing and NTLM credential disclosure vulnerability in Microsoft Windows. The flaw is associated with improper input validation and external control of a file name or path during processing of searchConnector-ms content. By supplying crafted searchConnector-ms data and inducing a user to open a malicious file or visit a malicious page, an attacker can cause Windows to initiate NTLM authentication and disclose NTLM responses in the security context of the current user. The issue is local in CVSS classification but depends on user interaction and malicious content handling by the affected Windows component.
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.
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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A spoofing vulnerability affecting Windows NTLM.
A spoofing vulnerability affecting Windows NTLM.
A spoofing vulnerability in Windows NTLM (no additional details provided in the content).
A spoofing vulnerability in Windows NTLM.
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.