Microsoft Office Graphics Component Remote Code Execution Vulnerability
Published Sep 8, 2026
8.8
HIGHCVSS 3.1
EPSS 0.84%
Description
Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
Affected products
-
- Version 1.0.0StatusaffectedConstraints<16.113.26091433
- Version
-
- Version 16.0.1StatusaffectedConstraints<16.113.26091433
- Version
-
- Version 16.0.0StatusaffectedConstraints<16.113.26091433
- Version
-
- Version 16.0.1StatusaffectedConstraints<16.0.20430.20000
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Microsoft Office 365 for Mac | n/a |
| ||||||
| Microsoft | Microsoft Office LTSC for Mac 2021 | n/a |
| ||||||
| Microsoft | Microsoft Office LTSC for Mac 2024 | n/a |
| ||||||
| Microsoft | Microsoft Office for Android | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
1 other source (NVD) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Sep 9, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Sep–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.84% (0.00837) | 56.23th | v5 (v2026.06.15) |
| Sep 9, 2026 | 0.62% (0.00618) | 47.56th | v5 (v2026.06.15) |
References (1)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78439 vendor-advisorypatch
| Link | Providers | Tags |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78439 | vendor-advisorypatch |
Change history (0)
No recorded changes yet.