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CVE-2024-21591: Critical Junos OS Vulnerability Could lead to Unauthenticated Remote Code Execution

ID: 73a22eb3-46d8-531b-bde1-ae0a9601b553

STIX ID: report--73a22eb3-46d8-531b-bde1-ae0a9601b553

Feed Name: Arctic Wolf

Threat Score
30/100

Date Published: 2024-01-22

Date Updated: 2026-07-27

Author: Steven Campbell

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This is an advisory-style entry indicating that Junos OS on SRX and EX Series devices are affected in 'versions earlier than' several listed releases and provides the corresponding fixed versions (20.4R3-S9, 21.2R3-S7, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S2, 22.4R2-S2/22.4R3, and later releases). The text serves to identify affected and remediated releases but contains no technical exploit or impact details.

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