CVE-2025-53783
Microsoft Teams Remote Code Execution Vulnerability
HIGH
7.5
CVSS Score
Published: August 12, 2025 at 05:10 PM UTC
Updated: June 17, 2026 at 09:38 AM UTC
5 products affected across 1 vendorTeamsDynamics 365 GuidesDynamics 365 Remote Assist
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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit
Description
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 907.2505.29001.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 316.2505.28001, so it looks safe — our inference, not a vendor statement
v < 1.0.0.2025102802v < 25122.1207.3700.1444v < 25122.1415.3698.6812v < 7.10.11.0.0 ≤ v < 1416/1.0.0.20251028021.0.0 ≤ v < 25122.1415.3698.68121.0.0.0 ≤ v < 25122.1207.3700.14441.0.94 ≤ v < 1449/1.0.94.20251688021.0.97 ≤ v < 1449/1.0.97.20251022032.0.0 ≤ v < 7.10.1 (100772025102901)316.0000 ≤ v < 316.2505.28001907.0000 ≤ v < 907.2505.29001.01.0.01.0.0.01.0.941.0.972.0.0
Affected range stops below 1.0.0.2025102802, so it looks safe — our inference, not a vendor statement
Affected range stops below 1416/1.0.0.2025102802, so it looks safe — our inference, not a vendor statement
Affected range stops below 1449/1.0.94.2025168802, so it looks safe — our inference, not a vendor statement
Affected range stops below 1449/1.0.97.2025102203, so it looks safe — our inference, not a vendor statement
Affected range stops below 25122.1207.3700.1444, so it looks safe — our inference, not a vendor statement
Affected range stops below 25122.1415.3698.6812, so it looks safe — our inference, not a vendor statement
Affected range stops below 316.2505.28001, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.10.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.10.1 (100772025102901), so it looks safe — our inference, not a vendor statement
Affected range stops below 907.2505.29001.0, so it looks safe — our inference, not a vendor statement
v < 1.0.97.2025102203
Affected range stops below 1.0.97.2025102203, so it looks safe — our inference, not a vendor statement
v < 1.0.94.2025168802
Affected range stops below 1.0.94.2025168802, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53783SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHmicrosoft
Vector?
Quick Info
StatusANALYZED
CWE
CWE-122
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