2026-10 Security Bulletin: Junos OS: MX Series: Multiple vulnerabilities resolved

Supportportal.Juniper • October 14, 2026

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2026-10 Security Bulletin: Junos OS: MX Series: Multiple vulnerabilities resolved

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Juniper Networks Addresses High-Risk Vulnerabilities in Junos OS On October 14, 2026, Juniper Networks published a security bulletin detailing a high-severity vulnerability (CVE-2026-102081) affecting the SRX 4000 and SRX5000 Series with SPC3. The vulnerability arises from high session churn with application services configured, leading to a memory leak that can impact traffic. Additionally, multiple vulnerabilities in Junos OS and Junos OS Evolved were resolved, affecting various systems including the MX Series. The exact nature of these vulnerabilities was not specified in the articles. The patches for these vulnerabilities were released on the same day as the disclosures. Organizations using affected Junos OS versions are advised to apply the updates promptly to mitigate risks. 3 sources 63

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