CVE-2026-102082 Juniper Networks CVE debrief

Who should care

SRX Series administrators and security teams should assess exposure and apply patches or mitigations as needed. They should verify 'ssl-proxy' configuration and Junos OS versions, and prioritize patching or mitigating affected SRX Series devices to prevent potential service disruptions.

Why it matters

CVE-2026-102082 is a medium-severity vulnerability in Juniper Networks Junos OS on SRX Series devices. When 'ssl-proxy' is configured and a specific TLS message is received during session resumption, it can cause a Denial-of-Service (DoS). SRX Series administrators and security teams should assess exposure, verify configurations, and apply patches or mitigations as needed to prevent potential service disruptions.

• Temporary loss of traffic forwarding due to PFE crash.
• Potential for service disruption if multiple PFE crashes occur.
• Need for verification of 'ssl-proxy' configuration and Junos OS versions.
• Priority for patching or mitigating affected SRX Series devices.

Technical summary

An Improper Handling of Missing Special Element vulnerability in the SSL plugin of Juniper Networks Junos OS on SRX Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS). This issue occurs when 'ssl-proxy' is configured on SRX platforms and during a TLS session-resumption attempt a specifically malformed TLS message is received. This results in an invalid pointer access and PFE crash which causes a temporary loss of traffic forwarding until the PFE automatically recovers.

Defensive priority

Medium-priority assessment and patching recommended for SRX Series deployments using TLS session resumption.

Recommended defensive actions

• Review and apply Juniper Networks' patches for affected Junos OS versions on SRX Series devices.
• Verify 'ssl-proxy' configuration and disable if not required.
• Monitor for unusual TLS session resumption attempts.
• Update threat detection and response systems to account for this vulnerability.
• Perform an inventory of SRX Series devices to identify potential exposure.
• Review and test compensating controls for exposed systems while remediation is scheduled and verified.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and source item provide details on the vulnerability, affected versions, and Juniper Networks' advisory. However, no additional sources were provided to verify exploitation or impact. Defenders should verify 'ssl-proxy' configuration, Junos OS versions, and assess exposure to this vulnerability. The evidence is limited to the provided CVE record and source item.

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.