CVE-2026-50696
ZDI-26-622: Microsoft Windows IKEv2 AES-GCM Decryption Integer Underflow Remote Code Execution Vulnerability
Published Sep 8, 2026
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows. Authentication is not required to exploit this vulnerability, but only systems with specific IPsec configurations are vulnerable. The ZDI has assigned a CVSS rating of 8.1. The following CVEs are assigned: CVE-2026-50696.
Timeline
Detection, updates, and resolution for this record.
Sep 8, 2026 · Catalog
Detected
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows. Authentication is not required to exploit this vulnerability, but only systems with specific IPsec configurations are vulnerable. The ZDI has assigned a CVSS rating of 8.1. The following CVEs are assigned: CVE-2026-50696.
Sources
- CVE.orgCVE-2026-50696
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-50696
30-day exploitation probability 1.2%
first.org - Zero Day InitiativeZDI-26-622
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows. Authentication is not required to exploit this vulnerability, but only systems with specific IPsec configurations are vulnerable. The ZDI has assigned a CVSS rating of 8.1. The following CVEs are assigned: CVE-2026-50696.
zerodayinitiative.com