CVE-2026-63517 json
Microsoft Office Graphics Component Information Disclosure Vulnerability
published 2026-08-11 2 mo ago modified 2026-10-30 9 d ago also EUVD-2026-56421
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Patch / fix
- Microsoft Microsoft Office 2016 16.0.5565.1001
- Microsoft Microsoft Office 365 for Mac 16.112.26081010
- Microsoft Microsoft Office LTSC for Mac 2021 16.112.26081010
- Microsoft Microsoft Office LTSC for Mac 2024 16.112.26081010
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
Affected products
- Microsoft Microsoft 365 Apps for Enterprise
- Microsoft Microsoft Office 2016
- Microsoft Microsoft Office 2019
- Microsoft Microsoft Office 365 for Mac
- Microsoft Microsoft Office LTSC 2021
- Microsoft Microsoft Office LTSC 2024
- Microsoft Microsoft Office LTSC for Mac 2021
- Microsoft Microsoft Office LTSC for Mac 2024
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-63517
vendor-advisory, patch
Sources
- CVE List CVE-2026-63517
- NVD CVE-2026-63517
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