NBR2100G-E vulnerability

What happened

A security flaw has been discovered in Ruijie NBR2100G-E up to 20250919. Affected by this issue is the function listAction of the file /itbox_pi/branch_passw.php?a=list. Performing manipulation of the argument city results in os command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be exploited. Other parameters might be affected as well. The vendor was contacted early about this disclosure but did not respond in any way.

Affected versions

NBR2100G-E: 20250919 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.