CVE-2026-35423: Windows 11 Telnet Client Information Disclosure Vulnerability
Out-of-bounds read in Telnet Client allows an unauthorized attacker to disclose information over a network.
Other sources
Windows 11 Telnet Client Information Disclosure Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 6.2.9200.26079Patch KB5087470 - Upgrade
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Fixed in 10.0.14393.9140Patch KB5087537 - Upgrade
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Fixed in 6.3.9600.23181Patch KB5087471 - Upgrade
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Fixed in 10.0.28000.2113Patch KB5089548 - Upgrade
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Fixed in 10.0.26100.8457Fixed in 10.0.26100.8390Patch KB5089466 - Upgrade
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Fixed in 10.0.26100.32860Fixed in 10.0.26100.32772Patch KB5087423 - Upgrade
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Fixed in 10.0.25398.2330Patch KB5087541 - Upgrade
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Fixed in 10.0.22631.7079Patch KB5087420 - Upgrade
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Fixed in 10.0.26200.8457Fixed in 10.0.26200.8390Patch KB5089466 - Upgrade
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Fixed in 10.0.22631.7219Patch KB5093998 - Upgrade
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Fixed in 10.0.19045.7417Patch KB5094127 - Upgrade
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Fixed in 10.0.19044.7291Patch KB5087544 - Upgrade
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Fixed in 10.0.20348.5139Fixed in 10.0.20348.5074Patch KB5087424 - Upgrade
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Fixed in 10.0.17763.8755Patch KB5087538
Event History
Frequently Asked Questions
What is the severity of CVE-2026-35423?
CVE-2026-35423 is classified as an Information Disclosure vulnerability.
How do I fix CVE-2026-35423?
To fix CVE-2026-35423, ensure that your system is updated with the latest security patches from Microsoft.
What products are affected by CVE-2026-35423?
CVE-2026-35423 affects Microsoft Windows 11 and various versions of Windows Server and Windows 10.
Can CVE-2026-35423 be exploited remotely?
Yes, CVE-2026-35423 can potentially be exploited by attackers over the network.
What are the potential impacts of CVE-2026-35423?
The potential impact of CVE-2026-35423 includes unauthorized information disclosure to attackers.