CVE-2026-62870
published 2026-08-04CVE-2026-62870: Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
PriorityP355high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.63%
47.7th percentile
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | excel | — | — |
| microsoft | microsoft_365_apps_for_enterprise | >= 16.0.1 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_excel_2016 | >= 16.0.0.0 < 16.0.5561.1001 | 16.0.5561.1001 |
| microsoft | microsoft_office_2019 | >= 19.0.0 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_ltsc_2021 | >= 16.0.1 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_ltsc_2024 | >= 16.0.0 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
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VulDB
Microsoft Excel/Office use after free
vuldb·2026-08-04·CVSS 8.8
CVE-2026-62870 [HIGH] Microsoft Excel/Office use after free
A vulnerability was found in Microsoft Excel and Office and classified as critical. This vulnerability affects unknown code. Such manipulation leads to use after free.
This vulnerability is listed as CVE-2026-62870. The attack may be performed from remote. There is no available exploit.
It is best practice to apply a patch to resolve this issue.
GHSA
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
ghsa_unreviewed·2026-08-04
CVE-2026-62870 [HIGH] CWE-416 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-04
Published