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Microsoft Windows 11 26h2: vulnerabilities and CVEs

Microsoft Windows 11 26h2 has 353 published vulnerabilities, 353 of them in the last 12 months. 23 are rated critical and 1 are listed by CISA as actively exploited.

CVEs353
Last 12 months353
Critical23
Actively exploited1

All vulnerabilities in the catalogue →⭐ Follow this technology

🔴 Actively exploited (CISA KEV)

CVESeverityEPSSActive exploitationPublishedDescription
CVE-2026-96951High (8.8)1.5%⚠ Active exploitationOct 13, 2026
Improper neutralization of special elements used in a command ('command injection') in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.

Latest vulnerabilities

CVESeverityEPSSActive exploitationPublishedDescription
CVE-2026-97844Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97843Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97842Medium (6.5)0.55%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97841Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97840Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97839Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97838Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97837Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97836Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97835Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97834Medium (6.5)0.55%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97833Medium (6.5)0.55%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97832Medium (6.5)0.55%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97831Medium (6.5)0.73%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97830High (7.5)0.87%—Oct 13, 2026
Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.
CVE-2026-97829Medium (6.5)0.77%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97828Medium (6.5)0.77%—Oct 13, 2026
Buffer over-read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97827Medium (6.5)0.77%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97826Medium (6.5)0.77%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97825Medium (6.5)0.77%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97824Medium (6.5)0.77%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97823Medium (6.5)0.77%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97822Medium (6.5)0.74%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97821Medium (6.5)0.74%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97820Medium (6.5)0.74%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97819Medium (6.5)0.95%—Oct 13, 2026
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97817Medium (6.5)0.95%—Oct 13, 2026
Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over a network.
CVE-2026-97816Critical (9.8)0.89%—Oct 13, 2026
Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.
CVE-2026-97815Critical (9.8)0.67%—Oct 13, 2026
Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
CVE-2026-97814Critical (9.8)0.97%—Oct 13, 2026
Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.

🎯 How it gets exploited (ATT&CK techniques)

  1. T1068 Exploitation for Privilege Escalation232
  2. T1005 Data from Local System79
  3. T1059 Command and Scripting Interpreter64
  4. T1190 Exploit Public-Facing Application43
  5. T1210 Exploitation of Remote Services43
  6. T1203 Exploitation for Client Execution32

Number of CVEs of this technology mapped to each exploitation or primary-impact technique.

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