CVE-2025-49699

Local code execution via use-after-free

Published Jul 8, 2025 · Updated Feb 26, 2026

Use-after-free in Microsoft Office products allows local users to execute code after required interaction by another user. Microsoft has not published the affected Office component, the object whose lifetime is mishandled, or the operation that reuses freed memory. Exploitation requires no privileges but does require user interaction and high-complexity preparation; successful exploitation executes attacker-controlled code in the affected application's context.

CVSS severity7.0
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Microsoft Office products allows local users to execute code after required interaction by another user. Microsoft has not published the affected Office component, the object whose lifetime is mishandled, or the operation that reuses freed memory. Exploitation requires no privileges but does require user interaction and high-complexity preparation; successful exploitation executes attacker-controlled code in the affected application's context.

The record

CVE
CVE-2025-49699
Published
Jul 8, 2025
Updated
Feb 26, 2026
Vendor
Microsoft
Product
Microsoft PowerPoint 2016
Classifications
CWE-416, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.0.0 <16.0.5508.1000

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft PowerPoint 2016version=16.0.0 <16.0.5508.1000
Microsoft · Microsoft Office LTSC for Mac 2024version=16.0.0 <16.99.25071321
Microsoft · Microsoft Office 2019version=19.0.0 <https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Office LTSC for Mac 2021version=16.0.1 <16.99.25071321
Microsoft · Microsoft Outlook 2016version=16.0.0.0 <16.0.5508.1002
Microsoft · Microsoft Office LTSC 2021version=16.0.1 <https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Word 2016version=16.0.1 <16.0.5508.1000
Microsoft · Microsoft Office LTSC 2024version=16.0.0 <https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft 365 Apps for enterpriseversion=16.0.1 <https://aka.ms/OfficeSecurityReleases

Published CVSS scores

7.0Microsoft CorporationCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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