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No exploitation reportedAwaiting NVD analysis

CVE-2026-118723

Microsoft Office Excel Remote Code Execution Vulnerability

No exploitation reported by the sources we read.

  • Published2026-11-10
  • WeaknessCWE-822

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Timeline

dates in UTC
  1. 2026-11-1018:25CVE publishedCNA

Versions per branch

Products declared by the CNA

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Microsoft 365 Apps for Enterprise

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 16.0.1, < https://aka.ms/OfficeSecurityReleasesfixed in https://aka.ms/OfficeSecurityReleasescustom
  • Microsoft Office 365 for Mac
    Affected
    • ≥ 1.0.0, < 16.115.26110837fixed in 16.115.26110837custom
  • Microsoft Office LTSC 2021

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 16.0.1, < 16.0.14334.21048fixed in 16.0.14334.21048custom
  • Microsoft Office LTSC 2024

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 16.0.0, < 16.0.17932.21140fixed in 16.0.17932.21140custom
  • Microsoft Office LTSC for Mac 2021
    Affected
    • ≥ 16.0.1, < 16.115.26110837fixed in 16.115.26110837custom
  • Microsoft Office LTSC for Mac 2024
    Affected
    • ≥ 16.0.0, < 16.115.26110837fixed in 16.115.26110837custom

1 more product in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-10

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-118723 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2026-11-10
  • CNACVSS 3.17.82026-11-10
  • NVDCVSS 3.17.8read 2026-11-10
  • CNAweakness (CWE)CWE-8222026-11-10
  • NVDweakness (CWE)CWE-822read 2026-11-10

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2026-11-10
Last Modified
2026-11-10
NVD status
Awaiting Analysis

Frequently asked questions

What is CVE-2026-118723?

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Is CVE-2026-118723 actively exploited?

Active exploitation of CVE-2026-118723 has not been confirmed.

What is the CVSS score for CVE-2026-118723?

CVE-2026-118723 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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