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High 7.8Published Jun 9, 2026
CVE-2026-44819Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Updated under an hour ago ()
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It affects microsoft 365_apps and 6 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-122
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
microsoft 365_apps microsoft:365_apps | all versions; all versions | NVD |
microsoft microsoft_365 microsoft:microsoft_365 | 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; all versions | NVD |
microsoft office_2024 microsoft:office_2024 | all versions; all versions; all versions | NVD |
microsoft sharepoint_server microsoft:sharepoint_server | before 16.0.19725.20384; 2016; 2019 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44819vendor-advisory
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.