Microsoft's 2026 Patch Tuesday: 120 Flaws Fixed, No Zero-Days in Sight

120 security vulnerabilities were fixed by Microsoft in its May 2026 Patch Tuesday, with 30 of them being critical, but no zero-days were found, providing a temporary reprieve for administrators who have been dealing with a busy patching schedule in recent months.

Understanding the Patch Tuesday

The patching process is a regular occurrence in the tech world, with companies like Microsoft, Google, and Apple constantly updating their software to fix security flaws. This month, Microsoft has fixed 120 flaws, including 30 critical ones, which is a significant number but lower than the 167 vulnerabilities patched in April 2026. According to The Register, this is the first time in two years that Microsoft has not reported any zero-day vulnerabilities.

Impact on the Industry

This news comes at a time when the tech industry is abuzz with discussions about the open-source social contract, with Bambu Lab being accused of abusing it, and the importance of communication among senior developers. The fact that Microsoft has been able to fix such a large number of vulnerabilities without any zero-days is a testament to the company's commitment to security. However, it also highlights the ongoing struggle that companies face in keeping their software secure, with Google and Apple also constantly updating their software to fix security flaws.

What the Sceptics Say

Some sceptics might argue that the fact that Microsoft has fixed 120 vulnerabilities is a sign of the company's inability to produce secure software in the first place. They might also point out that the lack of zero-days does not necessarily mean that the software is secure, as there could be other vulnerabilities that have not been discovered yet. However, this argument ignores the fact that all software has vulnerabilities, and that the key to security is constant updating and patching.

What This Means for the Industry

The fact that Microsoft has been able to fix such a large number of vulnerabilities without any zero-days is a positive sign for the industry. It shows that companies are taking security seriously and are committed to producing secure software. In the next 6-12 months, we can expect to see more companies following Microsoft's lead and prioritizing security. Google and Apple are likely to continue to update their software to fix security flaws, and we may see new companies emerge that specialize in security solutions.

Key Takeaways

1. Engineers: Prioritize security when designing software, and make sure to constantly update and patch vulnerabilities.
2. Investors: Look for companies that prioritize security and have a strong track record of producing secure software.
3. Business Leaders: Make security a top priority, and allocate sufficient resources to ensure that software is constantly updated and patched.
4. Consumers: Be aware of the potential risks associated with software vulnerabilities, and make sure to keep your software up to date.

Sources

• The Register: Doozy of a Patch Tuesday includes 30 critical Microsoft CVEs
• BleepingComputer: Microsoft May 2026 Patch Tuesday fixes 120 flaws, no zero-days
• Krebs on Security: Patch Tuesday, May 2026 Edition

As engineers, investors, and business leaders, it is essential to stay vigilant and prioritize security in the face of an ever-evolving threat landscape. For engineers, this means continuously updating and patching software to prevent vulnerabilities. For investors, it means looking for companies with a strong security track record. For business leaders, it means allocating sufficient resources to ensure software security.