Description
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Published: 2026-08-11
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

An out‑of‑bounds read vulnerability in the Graphics Component of Microsoft Office allows an attacker who has local access to read protected data that should not be readable. The flaw does not enable code execution or denial of service; instead it lowers confidentiality of files and data stored on the machine. The weakness is a classic CWE‑125 out‑of‑bounds read.

Affected Systems

The affected products include Microsoft 365 Apps for Enterprise, Microsoft Office 2019, Microsoft Office 365 for Mac, Microsoft Office LTSC 2021, Microsoft Office LTSC 2024, Microsoft Office LTSC for Mac 2021 and Microsoft Office LTSC for Mac 2024. No affected-version details are available, so the specific versions impacted are not confirmed.

Risk and Exploitability

With a CVSS score of 5.5 the vulnerability is considered moderate in severity. The EPSS score of <1% indicates a low probability that it will be actively exploited, and the vulnerability is not listed in the CISA KEV catalog. The likely attack path requires local user privileges, meaning an attacker must already have access to the target computer and be able to run Office to trigger the buffer over‑read. In the absence of a remote or privilege‑escalation vector, the overall risk to organizations is modest but non‑negligible, especially where sensitive documents are stored on user‑level machines.

Generated by OpenCVE AI on August 12, 2026 at 16:07 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Microsoft Office cumulative update that fixes CVE-2026-62842.
  • Limit access to Office applications by enforcing least‑privilege policies and restricting local user accounts that do not require the software.
  • If possible, run Office with restricted graphics capabilities or disable the Graphics Component to prevent the flaw from being triggered.

Generated by OpenCVE AI on August 12, 2026 at 16:07 UTC.

Tracking

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Advisories

No advisories yet.

History

Mon, 17 Aug 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared 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
Vendors & Products 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

Thu, 13 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft microsoft 365
CPEs cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
cpe:2.3:a:microsoft:microsoft_365:-:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x86:*
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x64:*
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x86:*
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:macos:-:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:macos:-:*
Vendors & Products Microsoft microsoft 365

Tue, 11 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Title Microsoft Office Graphics Component Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft 365 Apps
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
Microsoft office 365
Microsoft office Macos 2021
Microsoft office Macos 2024
Weaknesses CWE-125
CPEs cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:office_2019:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:office_365:*:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:office_macos_2021:*:*:*:*:*:long_term_servicing_channel:*:*
cpe:2.3:a:microsoft:office_macos_2024:*:*:*:*:*:long_term_servicing_channel:*:*
Vendors & Products Microsoft
Microsoft 365 Apps
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
Microsoft office 365
Microsoft office Macos 2021
Microsoft office Macos 2024
References
Metrics cvssV3_1

{'score': 5.5, 'vector': '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'}


Subscriptions

Microsoft 365 Apps Microsoft 365 Microsoft Office 365 For Mac Microsoft Office Ltsc 2021 Microsoft Office Ltsc 2024 Microsoft Office Ltsc For Mac 2021 Microsoft Office Ltsc For Mac 2024 Office 2019 Office 2021 Office 2024 Office 365 Office Macos 2021 Office Macos 2024
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-31T20:07:13.952Z

Reserved: 2026-07-14T21:10:38.083Z

Link: CVE-2026-62842

cve-icon Vulnrichment

Updated: 2026-08-11T19:18:21.287Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-11T17:18:37.577

Modified: 2026-08-13T12:30:51.583

Link: CVE-2026-62842

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-17T11:15:03Z

Weaknesses