CVE-2025-53783
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedHeap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceHeap-based buffer overflow vulnerability in Microsoft Teams enables an unauthenticated remote attacker to execute arbitrary code. The flaw exists in the Teams client component and can be exploited over the network, likely through maliciously crafted messages or data processed by the application.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 907.2505.29001.0< 316.2505.28001< 1.0.0.2025102802< 7.10.1< 25122.1207.3700.1444< 25122.1415.3698.6812< 1.0.97.2025102203< 1.0.94.2025168802CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed Microsoft productDetermine which affected product is installed: Microsoft Teams (desktop app), Microsoft Teams Panels, Microsoft Teams Phones, Microsoft Dynamics 365 Guides, or Microsoft Dynamics 365 Remote Assist. Check installed programs list or device management console.Affected if Any of the listed products are installed
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Check Teams desktop client versionOpen Teams desktop app, click your profile picture > About > About Microsoft Teams. Alternatively, run PowerShell: Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object {$_.DisplayName -like '*Teams*'} | Select-Object DisplayName, DisplayVersionAffected if Version is less than 1.0.0.2025102802, less than 7.10.1, less than 25122.1207.3700.1444, or less than 25122.1415.3698.6812
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Check Teams Panels versionAccess the Teams Panels device admin settings or check the device management portal. Navigate to Settings > About on the panel display device.Affected if Version is less than 1.0.97.2025102203
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Check Teams Phones versionAccess the Teams Phone device through the Teams admin center or check the device settings: Settings > About on the phone device.Affected if Version is less than 1.0.94.2025168802
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Check Dynamics 365 product versionsOpen the Dynamics 365 Guides or Remote Assist application. Navigate to Help > About or check the application settings panel for version information.Affected if Dynamics 365 Guides version is less than 907.2505.29001.0, or Dynamics 365 Remote Assist version is less than 316.2505.28001
If any installed product version falls below the corresponding affected version threshold, the environment is vulnerable and may be exploitable through malicious network messages processed by the Teams client component.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped1.0.0.20251028021.0.94.20251688021.0.97.2025102203
Apply Microsoft security updates for Teams when released; until then, restrict network exposure and monitor for indicators of compromise. Network segmentation may limit attack surface for client-side vulnerabilities.
Upgrade to version 907.2505.29001.0 or later for Dynamics 365 Guides; 316.2505.28001 or later for Dynamics 365 Remote Assist; 1.0.0.2025102802 or later for Teams desktop; 1.0.97.2025102203 or later for Teams Panels; 1.0.94.2025168802 or later for Teams Phones
- 1. Identify the Microsoft Teams client version currently installed by clicking on your profile picture and selecting 'About' > 'About Teams'
- 2. For Microsoft Teams (desktop), upgrade to version 1.0.0.2025102802 or later
- 3. For Teams on mobile devices, ensure you have the latest version from your app store
- 4. For Microsoft Teams Rooms devices, contact your administrator to ensure the latest firmware is applied
- 5. For Dynamics 365 Guides and Remote Assist, upgrade to version 907.2505.29001.0 or later for Guides, and 316.2505.28001 or later for Remote Assist
- 6. For Teams Panels devices, upgrade to firmware version 1.0.97.2025102203 or later
- 7. For Teams Phones, upgrade to firmware version 1.0.94.2025168802 or later
- 8. Restart the application or device after upgrading
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-53783 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-53783 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data