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CVE-2026-20140 is a high-severity local privilege escalation vulnerability affecting Splunk Enterprise for Windows. The flaw arises from unsafe DLL resolution during Splunk service startup, allowing DLL search-order hijacking. A low-privileged local attacker who can place a malicious DLL in a location that is searched during service initialization may cause the Splunk service to load attacker-controlled code. Because the service starts with elevated privileges on Windows, successful exploitation can result in execution as NT AUTHORITY\SYSTEM. The issue affects Windows deployments only and does not impact non-Windows installations. Reported affected versions include Splunk Enterprise for Windows 10.0.0 through 10.0.2, 9.4.0 through 9.4.7, 9.3.0 through 9.3.8, and 9.2.0 through 9.2.11.
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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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A privilege escalation vulnerability via DLL hijacking on Windows Splunk installations, mentioned only as part of vendor security history.
A local privilege escalation vulnerability via DLL hijacking on Windows in Splunk, mentioned only as background.
A vulnerability in Splunk Enterprise for Windows that allows session hijacking via crafted requests.
A high-severity local privilege escalation vulnerability in Splunk Enterprise for Windows caused by DLL search-order hijacking during service startup, allowing a low-privileged local attacker to gain SYSTEM privileges.
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.