Vulnerability record
CVE-2026-119997
The short answer
CVE-2026-119997 affects Microsoft Microsoft 365 Apps for Enterprise and is rated high (CVSS 7.8). It is not in CISA's Known Exploited Vulnerabilities catalog.
What it is
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code locally.
Weakness: CWE-122.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
No score
FIRST scores CVEs within a day of publication
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Affected products
Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021, Microsoft Office LTSC 2024. NVD's record lists the exact affected versions.
References
Questions
Is CVE-2026-119997 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-11.
How do I fix CVE-2026-119997?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Awaiting Analysis. The description is NVD's text, quoted as published.
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