CVE-2026-102054 Juniper Networks CVE debrief

Who should care

Junos OS and Junos OS Evolved users and administrators should assess exposure and take necessary actions to mitigate the vulnerability. This includes verifying affected versions, applying patches or updates, and monitoring VXLAN overlay-ping traffic for potential exploitation attempts. Security teams and operators should review the vulnerability details and assess the impact on their systems. Vulnerability management and security teams should prioritize a

Why it matters

CVE-2026-102054 is a medium-severity vulnerability in Junos OS and Junos OS Evolved that allows information disclosure via insufficient validation of VXLAN overlay ping. Junos OS and Junos OS Evolved users and administrators should assess exposure, verify affected versions, and apply patches or updates as needed.

• Information disclosure via stale PFE packet memory access.
• Potential for unauthorized data access.
• Need for verification of affected versions and application of patches or updates.
• Monitoring of VXLAN overlay-ping traffic for potential exploitation attempts.

Technical summary

The vulnerability in Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to obtain stale PFE packet memory via VXLAN overlay-ping traffic sent to a local VTEP. This is due to insufficient validation of VXLAN overlay ping. The vulnerability affects Junos OS and Junos OS Evolved, allowing information disclosure via stale PFE packet memory access. Users and administrators should verify affected versions and apply patches or updates as needed. The vulnerability has a medium severity and is being tracked by CVE-2026-102054.

Defensive priority

Medium priority for Junos OS and Junos OS Evolved users to assess exposure.

Recommended defensive actions

• Assess exposure of Junos OS and Junos OS Evolved systems to this vulnerability.
• Verify if systems are running affected versions and apply patches or updates if available.
• Monitor VXLAN overlay-ping traffic for potential exploitation attempts.
• 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.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and source item provide details on the vulnerability in Junos OS and Junos OS Evolved. The vulnerability allows an unauthenticated, adjacent attacker to obtain stale PFE packet memory via VXLAN overlay-ping traffic sent to a local VTEP.

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.