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CVE-2026-55023

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:789e51c2a1db668c741944fdd2c83072558c2c48575dab6117f7a6da09ae6ad5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 11 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:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/5

{"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:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/0

{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server 2019","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20175","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/9

{"product":"Microsoft Office 365 for Mac","vendor":"Microsoft","versions":[{"lessThan":"16.111.26071215","status":"affected","version":"1.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/3

{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Enterprise Server 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5561.1001","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/8

{"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:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/4

{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office 2019","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"19.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/2

{"product":"Microsoft Office LTSC for Mac 2024","vendor":"Microsoft","versions":[{"lessThan":"16.111.26071215","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/7

{"product":"Microsoft Office LTSC for Mac 2021","vendor":"Microsoft","versions":[{"lessThan":"16.111.26071215","status":"affected","version":"16.0.1","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/6

{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5561.1000","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/1

{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server Subscription Edition","vendor":"Microsoft","versions":[{"lessThan":"16.0.19725.20434","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/10

Affected products and versions

11 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:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/5
{"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:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/0
{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server 2019","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20175","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/9
{"product":"Microsoft Office 365 for Mac","vendor":"Microsoft","versions":[{"lessThan":"16.111.26071215","status":"affected","version":"1.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/3
{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Enterprise Server 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5561.1001","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/8
{"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:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/4
{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office 2019","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"19.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/2
{"product":"Microsoft Office LTSC for Mac 2024","vendor":"Microsoft","versions":[{"lessThan":"16.111.26071215","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/7
{"product":"Microsoft Office LTSC for Mac 2021","vendor":"Microsoft","versions":[{"lessThan":"16.111.26071215","status":"affected","version":"16.0.1","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/6
{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5561.1000","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/1
{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server Subscription Edition","vendor":"Microsoft","versions":[{"lessThan":"16.0.19725.20434","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/affected/10

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":5.5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"Microsoft Office Information Disclosure Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55023"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b3dbde16f3c8a8e634e9fc08f0f70fbf3d4b9a6cd4c3177daf1880282b3b1cc2 · sha256:5bf1fe6fa29f6806… · /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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