VulnSocial

CVE-2026-26108Disclosure(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 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-122CWE-787

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
  • office
  • office_long_term_servicing_channel

Threat summary

  • 1 mentions across 1 observed day

What's happening

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

Affected systems

Vendors
microsoft
Products
365_appsexcelofficeoffice_long_term_servicing_channeloffice_online_server

5 versions affected across 5 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-03-16: 1Technical Details · 2026-03-16: 103-16
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • CVE@CVEnew
    Disclosure

    CVE-2026-26108 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. https://www.cve.org/CVERecord?id=CVE-2026-26108

    Post summary

    The post announces a heap‑based buffer overflow vulnerability in Microsoft Office Excel that can lead to local code execution, but offers no proof of concept, exploit, or mitigation guidance.

    00000184
    56.7K followersView on X
CPE platform detail14 entries

14 of 14 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoft365_apps--x64
Appmicrosoft365_apps--x86
Appmicrosoftexcel2016-x64
Appmicrosoftexcel2016-x86
Appmicrosoftoffice2019-x64
Appmicrosoftoffice2019-x86
Appmicrosoftoffice_long_term_servicing_channel2021-x64
Appmicrosoftoffice_long_term_servicing_channel2021-x86
Appmicrosoftoffice_long_term_servicing_channel2021macos-
Appmicrosoftoffice_long_term_servicing_channel2024-x64
Appmicrosoftoffice_long_term_servicing_channel2024-x86
Appmicrosoftoffice_long_term_servicing_channel2024macos-
Appmicrosoftoffice_online_server---
Appmicrosoftoffice_online_server---

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