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MSRC compact vulnerability detail

CVE-2026-20828 · Windows rndismp6.sys Information Disclosure Vulnerability

Out-of-bounds read in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to disclose information with a physical attack.

Severity
Important
Impact
Information Disclosure
CVSS
4.6 base · 4.0 temporal
Release
2026-01-13
Signals
Windows Internet Connection Sharing (ICS) Information Disclosure Exploited: No Publicly disclosed: No Exploitability: Exploitation Less Likely
CWE
CWE-125: Out-of-bounds Read
Patch Diff
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Resolved binary override
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Description
Out-of-bounds read in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to disclose information with a physical attack.
FAQ / Articles
Windows Internet Connection Sharing (ICS) Information Disclosure Vulnerability
Out-of-bounds read in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to disclose information with a physical attack.
FAQ
What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is Kernel memory read - unintentional read access to memory contents in kernel space from a user mode process.