VulnerabilityAnalyzed
CVE-2026-55026
Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally.
MEDIUM 5.5EPSS 0.45%
Does this matter?
Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own.
Description
Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.45% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- microsoft/365 apps · microsoft/microsoft 365 · microsoft/office 2016 · microsoft/office 2019 · microsoft/office 2021 · microsoft/office 2024 · microsoft/sharepoint server
- Source
- secure@microsoft.com
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55026Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.