CVE-2023-36847 on CISA KEV

A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on EX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.

01What CISA says about this vulnerability

A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on EX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.

02Required action — verbatim from CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

03Notes & references

• supportportal.juniper.net — https://supportportal.juniper.net/JSA72300

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Juniper Networks	Junos OS	0, 21.1, 21.2, 21.3, 21.4, 22.1, 22.2, 22.3, 22.4

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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