by Kastro
Paper/Archive/CVE-2026-70096

CVE-2026-70096

Microsoft Microsoft 365 Apps for Enterprise — Windows Rich Text Edit Control Remote Code Execution Vulnerability

EPSS 1%CVSS 9.8
critical.is priorityof 100
42
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 65.2.652 × 2013.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a network.

Affected

ProductAffectedFixed inSource
Microsoft 365 Apps for Enterprise16.0.1 – < https://aka.ms/OfficeSecurityReleaseshttps://aka.ms/OfficeSecurityReleasesCNA
Microsoft Office 365 for Mac1.0.0 – < 16.114.2610112316.114.26101123CNA
Microsoft Office LTSC 202116.0.1 – < 16.0.14334.2097416.0.14334.20974CNA
Microsoft Office LTSC 202416.0.0 – < 16.0.17932.2105616.0.17932.21056CNA
Microsoft Office LTSC for Mac 202116.0.1 – < 16.114.2610112316.114.26101123CNA
Microsoft Office LTSC for Mac 202416.0.0 – < 16.114.2610112316.114.26101123CNA
Windows 10 Version 160710.0.14393.0 – < 10.0.14393.961210.0.14393.9612CNA
Windows 10 Version 180910.0.17763.0 – < 10.0.17763.937610.0.17763.9376CNA
Windows 10 Version 21H210.0.19044.0 – < 10.0.19044.780710.0.19044.7807CNA
Windows 10 Version 22H210.0.19045.0 – < 10.0.19045.780710.0.19045.7807CNA
Windows 11 version 23H210.0.22631.0 – < 10.0.22631.765210.0.22631.7652CNA
Windows 11 Version 23H210.0.22631.0 – < 10.0.22631.765210.0.22631.7652CNA

Scores by source

microsoft (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-70096