CVE-2026-83781
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker with local access could exploit this to escalate privileges, potentially leading to system takeover.
Recommendation
Immediately install security updates for Windows Program Compatibility Assistant Service.
Other vulnerabilities in Windows Program Compatibility Assistant Service
See all- CVE-2026-96920High
Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-72969High
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-72968High
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-72934High
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-69743High
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-69596High
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-69563High
Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-69534High
Improper neutralization of special elements used in a command ('command injection') in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-68876High
Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges over a network.
- CVE-2026-68874Medium
A vulnerability in Windows Program Compatibility Assistant Service causes an out-of-bounds read, allowing an authorized attacker to disclose information over a network.
Original NVD description (English source)
Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS