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CVE-2026-20956

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3fad57e26c6e4cf093b7cae8b00446401d45784268516911c425d20a027b6f67
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 5 assertions

{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office LTSC 2024","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/2

{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office LTSC 2021","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"16.0.1","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/1

{"product":"Microsoft Office LTSC for Mac 2024","vendor":"Microsoft","versions":[{"lessThan":"16.105.26011018","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/4

{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft 365 Apps for Enterprise","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"16.0.1","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/0

{"product":"Microsoft Office LTSC for Mac 2021","vendor":"Microsoft","versions":[{"lessThan":"16.105.26011018","status":"affected","version":"16.0.1","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/3

Affected products and versions

5 source assertions
{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office LTSC 2024","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/2
{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office LTSC 2021","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"16.0.1","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/1
{"product":"Microsoft Office LTSC for Mac 2024","vendor":"Microsoft","versions":[{"lessThan":"16.105.26011018","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/4
{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft 365 Apps for Enterprise","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"16.0.1","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/0
{"product":"Microsoft Office LTSC for Mac 2021","vendor":"Microsoft","versions":[{"lessThan":"16.105.26011018","status":"affected","version":"16.0.1","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/affected/3

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/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:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-822","description":"CWE-822: Untrusted Pointer Dereference","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"Microsoft Excel Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20956"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3b6d55e1f3cd07f65d0a0f120ed5db30782ff5b78ce44dd326f0bc9a8551353 · sha256:f4f247cbe5996904… · /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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