Back to CVE records
Medium 6.5Published Sep 8, 2026
CVE-2026-80084Microsoft Office Outlook Information Disclosure Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft 365 Apps for Enterprise and 7 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Start free and add your stack
Free account, 1 product
Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Microsoft 365 Apps for Enterprise microsoft:365_apps_for_enterprise (from the name) | from 16.0.1 before 16.0.20326.20138 | CNA record |
Microsoft Microsoft Office 2016 microsoft:office_2016 (from the name) | from 16.0.0 before 16.0.5569.1002 | CNA record |
Microsoft Microsoft Office 2019 microsoft:office_2019 (from the name) | 19.0.0 builds before 16.0.10417.20207 | CNA record |
Microsoft Microsoft Office LTSC 2021 microsoft:office_ltsc_2021 (from the name) | from 16.0.1 before 16.0.14334.20906 | CNA record |
Microsoft Microsoft Office LTSC 2024 microsoft:office_ltsc_2024 (from the name) | from 16.0.0 before 16.0.17932.20976 | CNA record |
microsoft 365_apps microsoft:365_apps | all versions; all versions | NVD |
microsoft office_2016 microsoft:office_2016 | all versions; all versions | NVD |
microsoft office_2019 microsoft:office_2019 | all versions; all versions | NVD |
microsoft office_2021 microsoft:office_2021 | all versions; all versions | NVD |
microsoft office_2024 microsoft:office_2024 | all versions; all versions | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80084vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.