Vulnerability details
CVE-2026-42831
Microsoft Office LTSC for MacMicrosoft Office for Android
Microsoft Office Remote Code Execution Vulnerability
CVSS 3.1
7.8High
Official description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (microsoft) | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 ≤ v < 16.109.26051019 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 ≤ v < 16.109.26051019 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft Office for Android | 16.0.1 ≤ v < 16.0.19822.20190 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42831 vendor-advisorypatch
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2026-05-12
- Last updated
- 2026-08-10
- State
- Published
- Assigner (CNA)
- microsoft
Exploit prediction (EPSS)
0.43%
Probability of exploitation in 30 days
38.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-122Heap-based Buffer Overflow