Windows 11 CVE-2026-62705

Exploitation unconditionally requires an authenticated local session with at minimum standard user (low-privilege) rights on an affected Windows 11 system, as confirmed by CVSS PR:L and AV:L. The attacker must be physically present or connected via remote desktop - no network-remote exploitation path exists. The Bind Filter Driver is a standard Windows kernel component with no documented non-default configuration requirement; the vulnerability is present in default Windows 11 installations across the affected build ranges. The race condition itself imposes the primary technical constraint: the exploit must win a kernel-space timing race, which is non-deterministic and may require repeated attempts or a stabilizing exploit primitive, limiting reliable exploitation to actors with kernel exploit development capability (reflected in AC:H). Exploitation is bounded by: (1) mandatory local access - no remote unauthenticated attack surface; (2) requirement for a valid low-privilege user account on the target; and (3) high attack complexity due to timing-sensitive race condition mechanics that resist reliable, automated exploitation.

The CVSS 7.0 score accurately reflects a nuanced threat profile shaped by competing signals. AV:L is the most significant limiter: network-remote exploitation is not possible - an attacker must already have interactive or remote desktop access to the target. PR:L confirms a standard user account (not guest or anonymous access) is the minimum prerequisite, meaning the attacker must have cleared an initial access barrier before exploiting this flaw. AC:H reflects the race condition's inherent timing sensitivity; exploitation is not deterministic and requires sophisticated tooling or repeated triggering of concurrent driver operations. On the impact side, C:H/I:H/A:H with S:U indicates that a successful race win yields complete control of the vulnerable system without scope change to adjacent systems directly. EPSS data is absent from provided intelligence - exploitation probability cannot be quantified from available sources. The vulnerability is confirmed absent from CISA KEV, and no public proof-of-concept has been identified, placing this squarely in the category of a theoretically exploitable but not yet publicly weaponized privilege escalation primitive. Real-world priority is moderate-to-high for environments with shared Windows 11 workstations or those where post-compromise lateral movement and privilege escalation are key threat model concerns; it is lower for tightly access-controlled endpoints.

An attacker who has obtained a standard user account on a Windows 11 endpoint - through phishing, credential stuffing, or lateral movement from another compromised host - deploys a custom exploit that repeatedly triggers concurrent operations targeting the Bind Filter Driver's shared kernel resource. By winning the race condition timing window, the attacker's thread executes code or modifies kernel state with elevated privileges, ultimately acquiring a SYSTEM-level token. No public proof-of-concept is known at time of analysis, so reliable exploitation likely requires dedicated kernel exploit development expertise and may necessitate multiple attempt iterations due to the AC:H rating.