CVE-2026-102062 Juniper Networks CVE debrief

Who should care

Defenders responsible for Juniper Networks Junos OS SRX Series configurations, particularly those using Security Intelligence with HTTPS feed servers, should assess exposure and prioritize verification and remediation efforts.

Why it matters

CVE-2026-102062 is a high-severity vulnerability in Junos OS SRX Series that allows remote code execution via a compromised HTTPS feed server when Security Intelligence is used. Defenders should prioritize verifying exposure, updating Junos OS versions, and monitoring for indicators of compromise.

• Remote code execution with root privileges via compromised HTTPS feed server
• Potential disruption of Security Intelligence functionality
• Need for verification of Junos OS versions and configurations
• Possible impact on network security posture due to exploitation

Technical summary

An Use of Externally-Controlled Format String vulnerability in the ipfd daemon of Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker to execute code with root privileges via a compromised or impersonated configured HTTPS feed server when Security Intelligence is used. This vulnerability affects Junos OS SRX Series configurations using Security Intelligence with HTTPS feed servers. The exploitation of this vulnerability can lead to remote code execution with root privileges, potentially disrupting Security Intelligence functionality and impacting network security posture.

Defensive priority

Defenders should prioritize verifying exposure of Junos OS SRX Series configurations using Security Intelligence with compromised or impersonated HTTPS feed servers.

Recommended defensive actions

• Verify Junos OS SRX Series configurations for Security Intelligence use with HTTPS feed servers.
• Assess exposure to potential compromise of HTTPS feed servers.
• Review and update Junos OS versions to 23.2R2-S7.7 or later, 23.4R2-S8.13 or later, 24.2R2-S5.5 or later, 24.4R2-S5 or later, 25.2R2-S2 or later, 25.4R1-S3 or later, 26.2R1-S2 or later.
• Monitor for indicators of compromise related to Security Intelligence feed server interactions.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and source item detail an Use of Externally-Controlled Format String vulnerability in the ipfd daemon of Juniper Networks Junos OS on SRX Series, allowing an unauthenticated network-based attacker to execute code with root privileges via a compromised or impersonated configured HTTPS feed server.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.