Advisory Details

August 1st, 2025

Microsoft Skype Chromium Remote Code Execution Vulnerability

ZDI-25-770
ZDI-CAN-25335

CVE ID
CVSS SCORE 8.8, AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Skype
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Skype. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The issue results from the use of a vulnerable version of Google Chromium. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://support.microsoft.com/en-us/skype/skype-is-retiring-in-may-2025-what-you-need-to-know-2a7d2501-427f-485e-8be0-2068a9f90472
DISCLOSURE TIMELINE
  • 2025-01-30 - Vulnerability reported to vendor
  • 2025-08-01 - Coordinated public release of advisory
  • 2025-08-01 - Advisory Updated
CREDIT anonymous
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