CVE-2026-69769 – Windows HTTP Print Provider Remote Code Execution Vulnerability

CVE-2026-69769 is a critical heap-based buffer overflow in the Windows HTTP Print Provider. Successful exploitation could allow an unauthorized, in-network attacker to execute code remotely by calling arbitrary endpoints. The vulnerability requires low attack complexity and can affect the confidentiality, integrity, and availability of a compromised system.

CVSS SCORE: 9.8.

SEVERITY: Critical.

THREAT: An attacker with network access could exploit the vulnerable Windows HTTP Print Provider to execute code remotely. No privileges or user interaction are required, and successful exploitation could result in high confidentiality, integrity, and availability impact.

EXPLOITS: The vulnerability is not publicly disclosed and is not known to be exploited. Exploit code maturity is classified as Unproven, and the exploitation assessment is Exploitation Unlikely. No confirmed public exploit, zero-day exploitation, or proof-of-concept code is identified.

TECHNICAL SUMMARY: CVE-2026-69769 is a heap-based buffer overflow (CWE-122) affecting the Windows HTTP Print Provider. The flaw can be reached over a network with low attack complexity. An unauthorized in-network attacker can exploit the vulnerability by calling arbitrary endpoints, causing memory corruption that could lead to remote code execution. Exploitation requires neither privileges nor user interaction, and successful exploitation can have high impact on confidentiality, integrity, and availability.

EXPLOITABILITY: Affected software includes Windows 10 versions 1607, 1809, 21H2, and 22H2; Windows 11 versions 23H2, 24H2, 25H2, and 26H1; and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025, including the listed Server Core installations and supported architectures. An in-network attacker can potentially exploit the flaw by calling arbitrary endpoints.

BUSINESS IMPACT: Successful exploitation could allow unauthorized remote code execution on affected Windows systems. This creates significant business risk because an attacker could compromise sensitive information, alter system data or behavior, and disrupt system availability. A successful attack against important endpoints or servers could therefore lead to operational disruption and loss of data confidentiality and integrity.

WORKAROUND: No mitigations or workarounds are identified. An official fix is identified as the remediation, and affected updates require a restart.

URGENCY: This vulnerability is rated Critical with a CVSS base score of 9.8 and allows remote code execution over a network with low attack complexity, no privileges, and no user interaction. Although exploitation is assessed as unlikely and no exploitation is currently identified, the potential impact makes prompt deployment of the official fix important.