CVE-2026-83789
HighCVSS 8.8Summary
Heap-based buffer overflow in Windows SMB Client allows an unauthorized attacker to elevate privileges over a network.
Risk Assessment
A remote attacker could gain elevated privileges, potentially leading to full system compromise.
Recommendation
Install security updates and restrict access to SMB services from trusted networks.
Other vulnerabilities in Windows SMB Client
See all- CVE-2026-40410High
Use after free in Windows SMB Client allows an authorized attacker to elevate privileges locally.
- CVE-2026-72936High
Use after free in Windows SMB Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-69618Medium
An out-of-bounds read vulnerability in Windows SMB Client allows an authorized attacker to disclose information locally.
- CVE-2026-69572Medium
An out-of-bounds read vulnerability in Windows SMB Client allows an authorized attacker to disclose information over a network.
- CVE-2026-69544High
Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
- CVE-2026-65794Medium
A buffer over-read in Windows SMB Client allows an unauthorized attacker to disclose information over a network.
- CVE-2026-62799High
Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
- CVE-2026-62782Medium
An out-of-bounds read in Windows SMB Client allows an unauthorized attacker to disclose information over a network.
Original NVD description (English source)
Heap-based buffer overflow in Windows SMB Client allows an unauthorized attacker to elevate privileges over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS