VulnSocial

CVE-2026-85875Disclosure(microsoft / 365_apps)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft 365_apps systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • 365_apps
  • excel
  • microsoft_365
  • office_2016

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
365_appsexcelmicrosoft_365office_2016office_2019office_2021office_2024

2 versions affected across 7 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-11: 1Patch / Workaround · 2026-09-11: 1Technical Details · 2026-09-11: 109-11
Signal classification1 categories
Disclosure
1100.0%
Full discourse1 post
  • くろん｜情シスAIラボ@josys_AI_labo
    Disclosure

    Microsoft Office Excelに 情報漏洩の脆弱性。 CVE-2026-85875 CVSS v3 スコア: 5.5（警告） 対象が広い。 Microsoft 365 Apps Excel 2016 Office 2016 / 2019 / 2021 / 2024 Office 365 ローカル環境での情報漏洩なので 「ネット繋がってなければ大丈夫」 とはならない。 手元のPCで完結する攻撃。 物理アクセスのある内部環境こそ むしろ気を抜きやすい。 MicrosoftのSecurity Update Guideで パッチ状況を確認して、 対象バージョンを洗い出しておきたい。

    Post summary

    Microsoft announced a local information‑leak vulnerability in Excel (CVE‑2026‑85875) affecting many Office 365 products, with a CVSS score of 5.5; users are advised to check the Microsoft Security Update Guide for available patches.

    10000102
    18 followersView on X
CPE platform detail15 entries

15 of 15 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoft365_apps--x64
Appmicrosoft365_apps--x86
Appmicrosoftexcel2016-x64
Appmicrosoftexcel2016-x86
Appmicrosoftmicrosoft_365-macos-
Appmicrosoftoffice_2016--x64
Appmicrosoftoffice_2016--x86
Appmicrosoftoffice_2019--x64
Appmicrosoftoffice_2019--x86
Appmicrosoftoffice_2021--x64
Appmicrosoftoffice_2021--x86
Appmicrosoftoffice_2021-macos-
Appmicrosoftoffice_2024--x64
Appmicrosoftoffice_2024--x86
Appmicrosoftoffice_2024-macos-

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