CVE-2026-20761
A vulnerability exists in EnOcean SmartServer IoT version 4.60.009 and prior, which would allow remote attackers, in the LON IP-852 management messages, to send specially crafted IP-852 messages resulting in arbitrary OS command execution on the device.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A vulnerability exists in EnOcean SmartServer IoT version 4.60.009 and prior, which would allow remote attackers, in the LON IP-852 management messages, to send specially crafted IP-852 messages resulting in arbitrary OS command execution on the device.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.88% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-77
- Source
- ics-cert@hq.dhs.gov
References
- https://enoceanwiki.atlassian.net/wiki/spaces/DrftSSIoT/pages/1475410/SmartServer+IoT+Release+Notes#Current-Stable-Release
- https://enoceanwiki.atlassian.net/wiki/spaces/IEC/pages/288063529/Enhancing+Security
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-050-01.json
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-050-01
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.