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VulnerabilityPublished

CVE-2026-96157: Microsoft Windows 10 Version 1607 · Heap-based Buffer Overflow

Affects Microsoft Windows 10 Version 1607Source CVE Database V5

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Not known to be exploited · CVSS 9.8 Critical : upgrade to 10.0.14393.9688 as a priority.

Data as of 10 Nov 2026, 18:49 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (microsoft)CVSS 3.19.8
Patch
Available – fixed in 10.0.14393.9688, 10.0.17763.9487, 10.0.19044.7846 +8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
MicrosoftWindows 10 Version 1607Affected
  • >=10.0.14393.0 <10.0.14393.9688
Fixed in
  • 10.0.14393.9688
MicrosoftWindows 10 Version 1809Affected
  • >=10.0.17763.0 <10.0.17763.9487
Fixed in
  • 10.0.17763.9487
MicrosoftWindows 10 Version 21H2Affected
  • >=10.0.19044.0 <10.0.19044.7846
Fixed in
  • 10.0.19044.7846
MicrosoftWindows 10 Version 22H2Affected
  • >=10.0.19045.0 <10.0.19045.7846
Fixed in
  • 10.0.19045.7846
MicrosoftWindows 11 version 23H2Affected
  • >=10.0.22631.0 <10.0.22631.7711
Fixed in
  • 10.0.22631.7711
MicrosoftWindows 11 Version 23H2Affected
  • >=10.0.22631.0 <10.0.22631.7711
Fixed in
  • 10.0.22631.7711

AI-suggested

Microsoft has released official security updates that fix this vulnerability in the specified fixed versions. Users and administrators should apply these patches promptly to mitigate the risk. Since an official fix is available, no additional mitigation steps are required beyond patching.

Description

CVE-2026-96157 is a critical heap-based buffer overflow vulnerability in Microsoft Windows Media Foundation affecting Windows 10 Version 1607 and later builds up to specific patched versions. This flaw allows an unauthorized attacker to execute arbitrary code remotely over a network without user interaction. The vulnerability has a CVSS score of 9.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released official fixes for all affected versions.

References

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