Lantronix XPress-DR and XPress-DR-I (CoBos-family) firmware through 8.1.0.0 contains a missing authentication…
LANTRONIX · XPress-DR
The Lantronix XPress-DR and XPress-DR-I devices (CoBos-family firmware through 8.1.0.0) have a missing authentication flaw in their UDP configuration protocol on port 30718, which accepts unauthenticated frames. A remote attacker with network access to that port, requiring no credentials, user interaction, or special configuration, can read live device configuration and persistently overwrite the device IP address and serial-channel forwarding records, with changes committed to EEPROM and surviving reboots.
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.
- Exploited
- Not confirmed
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
Disclosed on 14 Oct 2026. No public exploit code or confirmed exploitation is recorded.
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Not named in any threat report yetAlso mentioned in 8 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Known_Cve | Oct 23, 2026 | Part 1/322 Oct 2026
- Known_Cve | Oct 22, 2026 | Part 2/421 Oct 2026
- Known_Cve | Oct 21, 2026 | Part 3/420 Oct 2026
- Known_Cve | Oct 20, 2026 | Part 3/419 Oct 2026
- Known_Cve | Oct 19, 2026 | Part 3/418 Oct 2026
- Known_Cve | Oct 18, 2026 | Part 3/417 Oct 2026
- 2 more on OTX