Speed
AI and faster exploitation of software flaws
The most significant AI development the NCSC expects is in finding and exploiting vulnerabilities. For defenders the practical result is less time to patch.
Last reviewed against NCSC (UK), NCSC New Zealand and UK Government (DSIT and Home Office). Sources
The warning
What the agencies say
In June 2026 the Five Eyes cyber agencies said AI is shrinking the window between vulnerability discovery and exploitation ever more quickly [3]. NCSC guidance published days earlier says threat actors are increasingly using AI to discover and exploit vulnerabilities, and that defenders have less time to patch [4].
The NCSC's 2025 assessment had already described the gap from disclosure to exploitation as down to days, with AI almost certain to cut it further [1]. It judged AI-assisted vulnerability research and exploit development the most significant development, particularly for skilled actors, and said fully automated end-to-end attacks are unlikely by 2027 [1].
What to do
A patching routine that keeps up
The NCSC guidance sets out steps for network defenders. Follow them in order.
-
1
Identify all your systems and which are internet accessible [4]. -
2
Decide whether each exposed system needs to be public, and add compensating controls where it does [4]. -
3
Run a process covering identification, prioritisation, validation, remediation and reporting [4]. -
4
Patch frequently and promptly, and filter out false positives before prioritising [4]. -
5
Fix root causes and classes of vulnerability, not only one-off issues [4].
Where it bites
Systems that need extra care
Legacy and operational technology
The guidance names admin login panels, legacy systems and operational technology as high-risk [4].
Open-source and dependencies
It notes that open-source code is likely to be heavily scanned by AI, and recommends a Software Bill of Materials and dependency scanning [4].
Commercial software
Work with suppliers on their vulnerability processes and make sure you can apply security updates quickly [4].
Keep reading
Read next
Prompt injection
What prompt injection is, why the NCSC says it may never be fully mitigated, and the design steps UK teams can take to limit its impact.
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What they are
A plain definition of AI cyber attacks with the three types that matter to UK organisations, each tied to an official source or a documented case.
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Are they new?
The NCSC judges AI mostly enhances existing attack methods to 2027. What that means for how UK organisations prioritise their defences.
Read the guideHow CyPro can help
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