CVE-2026-83698
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker could gain elevated privileges, potentially leading to full system compromise.
Recommendation
Apply the latest Windows security updates.
Other vulnerabilities in Windows Client-Side Caching (CSC) Service
See all- CVE-2026-83699High
Stack-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-70068High
Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-58637High
Use-After-Free vulnerability in Windows Client-Side Caching (CSC) Service. Allows an authorized attacker to elevate privileges locally.
- CVE-2026-20839Medium
Improper access control in the Windows Client-Side Caching (CSC) Service allows an authorized attacker to disclose information locally.
- CVE-2025-62466High
Null pointer dereference in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.
Original NVD description (English source)
Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS