What a CVSS 10.0 actually means, and the four questions to ask next
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What a CVSS 10.0 actually means, and the four questions to ask next
A CVSS 10.0 is the highest score the system can produce, and it appeared twice in the first week of September 2026. Both times, the number did most of the talking and almost none of the explaining.
Key Takeaways
- A CVSS 10.0 base score describes how bad exploitation would be, not whether anyone is exploiting it right now
- CISA KEV membership matters more than the number, because an actively exploited 7.5 outranks a theoretical 10.0
- Four questions decide your response: do I run it, is it internet reachable, is it in KEV, and is there a patch or only a mitigation
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