CVE-2026-109439
CVE-2026-109439 · Lantronix XPress-DR 8.1.0.0 Unauthenticated Configuration Write via UDP 30718
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
Lantronix XPress-DR and XPress-DR-I (CoBos-family) firmware through 8.1.0.0 contains a missing authentication vulnerability that allows remote attackers to read and persistently overwrite device configuration by sending crafted frames to the unauthenticated UDP configuration protocol on port 30718. Attackers can send a type 0xF8 query to read live configuration data and a type 0xFD frame with exactly 0x78 body bytes to rewrite the device IP address and serial-channel forwarding records, causing changes to commit to EEPROM and persist across reboots. The XPress-DR product series reached end-of-life/end-of-support in February 2025.
CVSS 9.3 · Critique · EPSS 0,6%
- Publication
- Mise à jour
Produits et versions concernés
xpress-dr
- Versions du logiciel
- ≥ 0, ≤ 8.1.0.0: Concernée (custom)
Aucun correctif publié
xpress-dr-i
- Versions du logiciel
- ≥ 0, ≤ 8.1.0.0: Concernée (custom)
Aucun correctif publié
Sources originales
- https://cdn.lantronix.com/wp-content/uploads/pdf/PCN-753-Rev-B-EOL-Notice-XPRESS.pdf?xnotes__c=I%20am%20interested%20in%20the%20XPress%20DR%20/%20XPress%20DR-IAP.
- https://www.vulncheck.com/advisories/lantronix-xpress-dr-unauthenticated-configuration-write-via-udp-30718
- https://nvd.nist.gov/vuln/detail/CVE-2026-109439