CVE-2026-83643
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk57th percentile - higher than 57% of all known CVEs
Summary
Stack-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
Risk Assessment
Risk of remote code execution, potentially leading to full system compromise by an unauthorized attacker.
Recommendation
Install the latest Windows security updates and restrict access to error reporting services.
Other vulnerabilities in Windows Error Reporting
See all- CVE-2026-97815Critical
Windows Error Reporting is affected by a heap-based buffer overflow vulnerability. This allows an unauthorized attacker to execute code over a network.
- CVE-2026-83748Critical
Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
- CVE-2026-83693Critical
Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
- CVE-2026-83519Critical
Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
- CVE-2026-20817High
Improper handling of insufficient permissions in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
- CVE-2019-0863HighActively exploited
An elevation of privilege vulnerability in Windows Error Reporting (WER), due to improper file handling. A local attacker could exploit this to gain elevated privileges.
- CVE-2026-97798High
Improper neutralization of argument delimiters in a command ('argument injection') in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
- CVE-2026-85800High
A heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
- CVE-2026-85354High
Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
- CVE-2026-83916High
Double free in Windows Error Reporting allows an authorized attacker to execute code locally.
Original NVD description (English source)
Stack-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS