VulnSocial

CVE-2026-63515False Positive(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

Out-of-bounds read 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-125CWE-191

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_2016
  • office_2019

Threat summary

  • 1 mentions across 1 observed day

What's happening

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

Affected systems

Vendors
microsoft
Products
365_appsmicrosoft_365office_2016office_2019office_2021office_2024

1 version affected across 6 products

Deep dive

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

    🛡️ CVE-2026-63515 says “Remote Code Execution,” but attackers still need code running locally. Not an internet-facing Office service—just CVSS wording doing its best to cause panic. https://windowsforum.com/security-alerts.84/cve-2026-63515-office-rce-is-local-not-network-exposed.442671/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #MicrosoftOffice #RemoteCodeExecution #Cvss #Cve202663515 https://t.co/I6avzIXqku

    Post summary

    The post argues that CVE‑2026‑63515 is a local RCE with no internet exposure, suggesting the CVSS rating is misleading and the vulnerability is not a real threat.

    0000042
    1.3K followersView on X
CPE platform detail13 entries

13 of 13 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoft365_apps--x64
Appmicrosoft365_apps--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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