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CVE-2026-45657

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6d41ace929a11ab1eadf32da772c712e1739ebad0a1528c433f2c01ac29603f8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 8 assertions

{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 24H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.8655","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/2

{"platforms":["x64-based Systems"],"product":"Windows Server 2025 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.32995","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/7

{"platforms":["ARM64-based Systems"],"product":"Windows 11 version 23H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.22631.7219","status":"affected","version":"10.0.22631.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/0

{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 25H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.26200.8655","status":"affected","version":"10.0.26200.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/3

{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 version 26H1","vendor":"Microsoft","versions":[{"lessThan":"10.0.28000.2269","status":"affected","version":"10.0.28000.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/4

{"platforms":["x64-based Systems"],"product":"Windows Server 2022","vendor":"Microsoft","versions":[{"lessThan":"10.0.20348.5256","status":"affected","version":"10.0.20348.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/5

{"platforms":["x64-based Systems"],"product":"Windows 11 Version 23H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.22631.7219","status":"affected","version":"10.0.22631.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/1

{"platforms":["x64-based Systems"],"product":"Windows Server 2025","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.32995","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/6
cwe · 2 assertions

{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en-US","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/problemTypes/0/descriptions/1

{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en-US","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

8 source assertions
{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 24H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.8655","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/2
{"platforms":["x64-based Systems"],"product":"Windows Server 2025 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.32995","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/7
{"platforms":["ARM64-based Systems"],"product":"Windows 11 version 23H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.22631.7219","status":"affected","version":"10.0.22631.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/0
{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 25H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.26200.8655","status":"affected","version":"10.0.26200.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/3
{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 version 26H1","vendor":"Microsoft","versions":[{"lessThan":"10.0.28000.2269","status":"affected","version":"10.0.28000.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/4
{"platforms":["x64-based Systems"],"product":"Windows Server 2022","vendor":"Microsoft","versions":[{"lessThan":"10.0.20348.5256","status":"affected","version":"10.0.20348.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/5
{"platforms":["x64-based Systems"],"product":"Windows 11 Version 23H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.22631.7219","status":"affected","version":"10.0.22631.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/1
{"platforms":["x64-based Systems"],"product":"Windows Server 2025","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.32995","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/affected/6

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"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","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/problemTypes/0/descriptions/1
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"Windows Kernel Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45657"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ab53818a7376f03c80f096dd6ce4f548e04273ce6a2435db307f481febc8d1ab · sha256:38bd0b09ecd0c5e9… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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