Windows Server 2022
CVE-2026-26111
HIGH
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Windows RRAS across Server 2016, 2022, and 2025 via an integer overflow vulnerability allows authenticated attackers to execute arbitrary code over the network with high privileges. Public exploit code exists for this vulnerability, and no patch is currently available. Authenticated users with network access can trigger the vulnerability through a simple interaction to gain complete system compromise.
Technical ContextAI
Classified as CWE-122 (Heap-based Buffer Overflow). Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
More in Windows Server 2022
View allWindows Internet Shortcut Files (.url) contain an external control vulnerability (CVE-2025-33053, CVSS 8.8) that enables
Windows SMB contains an improper access control vulnerability (CVE-2025-33073, CVSS 8.8) enabling authenticated attacker
Active Directory Domain Services contains an elevation of privilege vulnerability that allows authenticated domain users
Microsoft Scripting Engine contains a type confusion vulnerability allowing unauthorized remote code execution over the
Local privilege escalation in Microsoft Active Directory Federation Services (AD FS) lets an already-authenticated low-p
Windows CLFS Driver contains an input validation flaw enabling local privilege escalation, yet another CLFS kernel vulne
Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow enabling local privilege escalation
Windows Shell contains a protection mechanism failure (CVE-2026-21510, CVSS 8.8) that allows unauthenticated remote atta
This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. Rated critical severity (CVSS 9.8), thi
In IGEL OS before 11, Secure Boot can be bypassed because the igel-flash-driver module improperly verifies a cryptograph
Desktop Window Manager (DWM) in Windows contains a type confusion vulnerability (CVE-2026-21519, CVSS 7.8) that enables
Windows Common Log File System Driver contains another use-after-free for local privilege escalation, the latest in a se
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today