Medium [CVE-2026-101936] Junos OS: SRX Series: An attacker causes data-plane denial of service when chassis-cluster high availability is enabled
This medium-severity Juniper Networks advisory covers CVE-2026-101936 affecting Junos OS.
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Summary
A Reachable Assertion vulnerability in the srxpfe process of Juniper Networks Junos OS on SRX Series allows an adjacent network attacker to cause a denial of service of the data plane via malformed firewall-authentication synchronization traffic on chassis-cluster fabric interfaces.
- Junos OS before 23.2R2-S7.7
- Junos OS 23.4 before 23.4R2-S8.13
- Junos OS 24.2 before 24.2R2-S5.5
- Junos OS 24.4 before 24.4R2-S5
- Junos OS 25.2 before 25.2R2-S2
- Junos OS 25.4 before 25.4R1-S3
- Junos OS 26.2 before 26.2R1-S2
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
- 23.2R2-S7.7
- 23.4R2-S8.13
- 24.2R2-S5.5
- 24.4R2-S5
- 25.2R2-S2
- 25.4R1-S3
- 26.2R1-S2
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
Mitigation
Upgrade to a fixed release: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
Discussion(0)
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