🛡️ CVE-2023-5768
🟡 CVSS 5.9 — Medium ✅ No Known Exploit CWE-79 NVD
5.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Incomplete or wrong received APDU frame layout may cause blocking on link layer. Error reason was an endless blocking when reading incoming frames on link layer with wrong length information of APDU or delayed reception of data octets. Only communication link of affected HCI IEC 60870-5-104 is blocked. If attack sequence stops the communication to the previously attacked link gets normal again.

Details

Severity MEDIUM
CVSS Score 5.9
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-79
Public Exploit ✅ No
Source NVD
Published 2023-12-04
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
rtu520-firmware 13.4.1 13.4.3
rtu530-firmware 13.4.1 13.4.3
rtu540-firmware 13.4.1 13.4.3
rtu560-firmware 13.4.1 13.4.3

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