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FBI, CISA, and NSA reveal most exploited vulnerabilities of 2023

ID: ab3b0198-6dd1-5c6f-90ac-3a6ed57910a7

STIX ID: report--ab3b0198-6dd1-5c6f-90ac-3a6ed57910a7

Feed Name: Bleeping Computer

Threat Score
85/100

Date Published: 2024-11-12

Date Updated: 2026-04-20

Author: Sergiu Gatlan

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The FBI, NSA, CISA and Five Eyes published an advisory listing the top 15 vulnerabilities most routinely exploited in 2023 — the majority of which were initially abused as zero-days — and called for immediate patching and deployment of patch management; CVE-2023-3519 (Citrix NetScaler ADC/Gateway) is cited as the highest-impact exploit with thousands of servers backdoored in widespread campaigns.

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