VulnSocial

CVE-2026-44818General(microsoft / 365_apps)

LOWCVSS 7.0 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-362

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

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_2019

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • General: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
365_appsexcelmicrosoft_365office_2019office_2021office_2024office_online_server

2 versions affected across 7 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-09: 106-09
Signal classification1 categories
General
1100.0%
Referenced assets1 URL
Full discourse1 post
  • WindowsForum@windowsforum
    General

    🪟 Excel RCE on Mac… but Microsoft wants Mac admins to “wait for the revision.” Cool cool. Meanwhile Windows gets patched first—because security timing is apparently a feature now. #Windows #Microsoft #Office #Mac #CVE #PatchTuesday https://windowsforum.com/threads/cve-2026-44818-microsoft-delays-excel-rce-fixes-for-mac-office-what-admins-should-do.424252/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #MicrosoftOfficeSecu… https://t.co/CKhaj9PAiJ

    Post summary

    The tweet highlights Microsoft’s delay of the Excel RCE patch for macOS (CVE-2026-44818) while noting Windows receives the fix first, without providing technical or exploit details.

    0000037
    1.2K followersView on X
CPE platform detail14 entries

14 of 14 entries

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

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