CVE-2026-69621
HighCVSS 7.0Exploitation Probability (EPSS)
Low risk16th percentile - higher than 16% of all known CVEs
Summary
Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker with local access could gain elevated privileges, potentially leading to full system control.
Recommendation
Apply the latest Windows security updates and restrict access to the Fax service.
Other vulnerabilities in Windows Fax Service
See all- CVE-2026-72944High
Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-69509High
Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
- CVE-2023-35381High
A vulnerability in the Windows Fax Service allows for remote code execution. An attacker can exploit this flaw to gain control over the system.
- CVE-2023-21694Medium
Remote code execution vulnerability in Windows Fax Service. An attacker could remotely execute arbitrary code on the vulnerable system.
Original NVD description (English source)
Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

