Beyond Compare 4.2.10 May 2026

Using any legacy software requires a security audit. Good news: Beyond Compare 4.2.10 has no known remote code execution (RCE) vulnerabilities according to the National Vulnerability Database (NVD) as of 2025. However, its bundled OpenSSL version (1.0.2t) is EOL (End-of-Life) and lacks TLS 1.3 support.

Recommendations for secure use:

In Beyond Compare 4.2.10, you can synchronize folders based on actual file content (not just timestamps or size). beyond compare 4.2.10

A freelance web developer uses Beyond Compare to sync thousands of PHP and CSS files between a staging server and production. With Beyond Compare 4.2.10, the “mirror to right” action respects timestamp changes and only overwrites modified files. The session saves credentials and comparison rules, reducing a 20-minute manual sync to a 2-click operation.

We ran Beyond Compare 4.2.10 against its immediate successor (4.3.0) on a mid-range PC (Intel i5-8400, 16GB RAM, NVMe SSD) to measure raw speed: Using any legacy software requires a security audit

| Task | 4.2.10 | 4.3.0 | |------|--------|-------| | Compare 10,000 text files (rules-based) | 4.2 seconds | 4.1 seconds | | Binary compare of two 5GB ISO files | 47 seconds | 45 seconds | | Load 500MB folder tree (network share) | 12.3 seconds | 12.0 seconds | | Memory usage (idle) | 78 MB | 112 MB |

Conclusion: Version 4.2.10 is marginally slower (by 1-5%) but significantly more memory efficient, making it better suited for older hardware or virtual desktops with limited RAM. In Beyond Compare 4

One of the hidden gems of BC4 is the Table Compare (great for CSVs and TSV files).