SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-70310

Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

MEDIUM 5.5EPSS 0.43%

Does this matter?

Lower severity and a low EPSS score (0.43%). Track it; it rarely justifies an emergency change on its own.

Description

Out-of-bounds read in Microsoft Office Word 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
0.43% probability · 38th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-125
Affected
microsoft/365 apps · microsoft/microsoft 365 · microsoft/office 2019 · microsoft/office 2021 · microsoft/office 2024 · microsoft/word
Source
secure@microsoft.com
EPSS trend
0%3%5%26 October 2026: 0.43%26 October 202626 October 2026

EPSS 0.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.