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CVE-2026-40368

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:896aedeb519a3fa3a177e70a4b6c4cc729dd02abccd699f5d23e04dab0c60184
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server Subscription Edition","vendor":"Microsoft","versions":[{"lessThan":"16.0.19725.20280","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /containers/cna/affected/2

{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Enterprise Server 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5552.1002","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /containers/cna/affected/0

{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server 2019","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20128","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /containers/cna/affected/1

Affected products and versions

3 source assertions
{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server Subscription Edition","vendor":"Microsoft","versions":[{"lessThan":"16.0.19725.20280","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /containers/cna/affected/2
{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Enterprise Server 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5552.1002","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /containers/cna/affected/0
{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server 2019","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20128","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"Microsoft SharePoint Server Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40368"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c8224ef9f2428b45cc432bc43879bc8cccefb2a7c6e32591905a251d58350735 · sha256:99ef352e7abb273e… · /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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