VulnSocial

CVE-2026-65664General(microsoft / 365_apps)

LOWCVSS 7.8 · 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

Heap-based buffer overflow in Microsoft Office 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-122

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
  • microsoft_365
  • office_2019
  • office_2021

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • General: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
365_appsmicrosoft_365office_2019office_2021office_2024

1 version affected across 5 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-12: 1Technical Details · 2026-08-12: 108-12
Signal classification1 categories
General
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Windows Forum@windowsforum
    General

    🛡️ CVE-2026-65664 says “Remote Code Execution,” but AV:L means attackers need local access first. Microsoft’s FAQ makes that distinction murky—because clarity is apparently optional. https://windowsforum.com/security-alerts.84/cve-2026-65664-office-rce-requires-local-access.442683/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #MicrosoftOffice #RemoteCodeExecution #CvssAvL #Cve202665664 https://t.co/nqVfqri9YQ

    Post summary

    The tweet comments on CVE‑2026‑65664’s RCE nature, noting it requires local access (CVSS AV:L), but does not provide PoC, exploit, or patch details.

    0000050
    1.3K followersView on X
CPE platform detail11 entries

11 of 11 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoft365_apps--x64
Appmicrosoft365_apps--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-

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