Cursor
5
Incidents
6.1
Avg Severity
2
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Destructive Action
1
Infinite Loop
1
Worst Incident
STUPID-2026-0029 10/10Malicious cloned repository triggered code execution in Cursor on Windows
Microsoft Copilot
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Security Vulnerability
1
Worst Incident
STUPID-2026-0051 10/10EchoLeak: a zero-click email silently exfiltrated data from Microsoft 365 Copilot (CVE-2025-32711, CVSS 9.3)
Comparison Summary
| Metric | Cursor | Microsoft Copilot |
|---|---|---|
| Total Incidents | 5 | 1 |
| Avg Severity | 6.1/10 | 10.0/10 |
| Critical Incidents | 2 | 1 |
| Top Failure Mode | Security Vulnerability | Security Vulnerability |
Frequently Asked Questions
Is Cursor or Microsoft Copilot more reliable?
Based on StupidLLM data, Cursor has 5 documented failures (avg severity 6.1/10) while Microsoft Copilot has 1 (avg severity 10.0/10). Cursor shows better reliability based on average severity scores.
What are the main differences between Cursor and Microsoft Copilot failures?
Cursor's most common failure mode is security vulnerability, while Microsoft Copilot most commonly fails via security vulnerability. Cursor has 2 critical incidents vs Microsoft Copilot's 1.