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Patchmageddon: Exploitation Threatens Software Security

Patchmageddon: Exploitation Threatens Software Security

First seen 1 Nov 2026, 16:47 UTC • •
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ThreatCluster AI
ThreatCluster •November 1, 2026 at 18:55 UTC
  • •Average time to exploit vulnerabilities has dropped to zero days.
  • •Only 75 out of 530 high and critical vulnerabilities were patched by May 2026.
  • •AI advancements are enabling faster detection and exploitation of vulnerabilities.

As of November 2026, the average time between the disclosure of software vulnerabilities and their exploitation has fallen to zero days. A report from Anthropic indicated that of 530 high and critical vulnerabilities, only 75 had been patched by May 2026. This alarming trend is exacerbated by the rapid advancement of AI models that can identify vulnerabilities at scale, making state-grade cyber capabilities accessible to malicious actors. The persistence of unpatched vulnerabilities, particularly in open-source software, poses significant risks to businesses and critical infrastructure. Security teams are now facing an environment where multiple vulnerabilities may be exploited concurrently, with little time to respond. The articles emphasize the need for improved patch management and compensating controls to mitigate these risks.

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Timeline

2026-05-01
Anthropic reports on vulnerabilities
Of 530 high and critical vulnerabilities, only 75 had been patched, highlighting a significant patching gap.
am.jpmorgan.com
2026-11-01
Patchmageddon article published
The article discusses the urgent need for improved patch management in light of zero-day exploits.
am.jpmorgan.com

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Common questions

What vulnerabilities are currently unpatched?
As of May 2026, only 75 out of 530 high and critical vulnerabilities reported were patched.
How quickly are vulnerabilities being exploited?
The average time between vulnerability disclosure and exploitation is now zero days.
What measures can organizations take?
Organizations should enhance their patch management processes and consider implementing compensating controls.