Patch gap
The time between a software flaw being fixed and all affected systems updating, leaving a window for attackers.
Imagine a company releases a fix for a security problem in its software. The 'patch gap' is the time between when that fix is available and when every single user has installed it. During this period, attackers know about the flaw and its fix, but some systems are still vulnerable.
For example, if a popular app has a security hole, and the company releases a patch on Monday, but it takes until Friday for most users to update, that four-day period is the patch gap. Attackers could use that time to exploit the flaw on systems that haven't been updated yet.
The patch gap refers to the temporal window between the disclosure or patching of a software vulnerability and its universal remediation across all deployed instances. This period represents a critical attack surface, as adversaries can exploit known weaknesses before all systems are updated. The duration and exploitability of the patch gap are influenced by factors such as the speed of patch deployment, user update behavior, and the complexity of the patching process.
Recent research from Anthropic highlights how large language models (LLMs) might be used to identify and exploit vulnerabilities during the patch gap. This raises concerns about AI accelerating the timeline for cyberattacks against newly patched systems.
- Measuring LLMs' impact on N-day exploitsAnthropic · Anthropic Research ·
- Anthropic Claude
- Anthropic's research examines the impact of LLMs on the 'patch gap' in cybersecurity.
- Zero-day exploit
- A zero-day exploit targets a vulnerability before any patch is
- Vulnerability disclosure
- This is the act of making a vulnerability public, whic
The term 'patch gap' is a common concept in cybersecurity, referring to the time lag in software updates. It is widely used in security discussions and literature.
To observe the concept of delayed updates, check the update settings on your own devices. Notice how operating system updates or app updates often have a 'download and install' option that might not be immediate. You can also look up news about recent software vulnerabilities and see how long it takes for companies to release patches and for users to apply them.
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news.
- PromptRole-play a student struggling with math for AI tutor simulationSimulate a student's math struggles and uncertainty for AI tutor evaluation. · 5 min
- TemplateReusable workflow templates for healthcare teamsTeams can create and share templates for common workflows like documentation or prior authorizations. · 15 min
- TemplateTemplate for building an AI tool tailored to your workA structured approach to defining and building a custom AI tool for specific business needs. · 15 min
- TemplateEvals CSV prompt list for agent skillsA CSV file template for listing prompts used in evaluating agent skills. · 20 min
- HeuristicDouble coding agent task completion with docs linksProviding coding agents with a documentation link significantly increases their task completion rate. · 2 min
Questions people ask
- How long does a patch gap usually last?
- The duration varies greatly depending on the software, the severity of the vulnerability, and how quickly users or organizations apply the update. It can range from hours to weeks or even months for some systems.
- Can AI make the patch gap worse?
- Potentially. AI could be used to quickly identify vulnerabilities and develop exploits that target systems within the patch gap, making attacks more efficient and widespread.
First seen on Subvolts Jun 17, 2026. Updated Sep 15, 2026. Written by an AI model from the items above and reviewed against them weekly; report an error.