Siemens SIPROTEC 5 Inadequate Encryption Strength (CVE-2024-38867)

medium Tenable OT Security Plugin ID 504449

Synopsis

The remote OT asset is affected by a vulnerability.

Description

The affected devices are supporting weak ciphers on several ports (443/tcp for web, 4443/tcp for DIGSI 5 and configurable port for syslog over TLS). This could allow an unauthorized attacker in a man-in-the-middle position to decrypt any data passed over to and from those ports.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: Medium

ID: 504449

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 11/18/2025

Updated: 11/18/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: cpe:/o:siemens:siprotec_5_7sa86_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7ve85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sd87_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sl82_%28cp150%29_firmware, cpe:/o:siemens:siprotec_5_7sk82_%28cp100%29_firmware, cpe:/o:siemens:siprotec_5_7sk85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_compact_7sx800_%28cp050%29_firmware, cpe:/o:siemens:siprotec_5_7sd84_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_6md85_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sk82_%28cp150%29_firmware, cpe:/o:siemens:siprotec_5_7sj81_%28cp150%29_firmware, cpe:/o:siemens:siprotec_5_7sj85_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_6md86_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7vu85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7ut86_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7ut82_%28cp100%29_firmware, cpe:/o:siemens:siprotec_5_7ut86_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_6mu85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7st85_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7st86_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sd82_%28cp150%29_firmware, cpe:/o:siemens:siprotec_5_7sl87_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_6md85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7ut85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sl82_%28cp100%29_firmware, cpe:/o:siemens:siprotec_5_7sd82_%28cp100%29_firmware, cpe:/o:siemens:siprotec_5_7sd86_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_6md86_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sx82_%28cp150%29_firmware, cpe:/o:siemens:siprotec_5_7sa87_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sj82_%28cp100%29_firmware, cpe:/o:siemens:siprotec_5_7vk87_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7vk87_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sj82_%28cp150%29_firmware, cpe:/o:siemens:siprotec_5_7ut85_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7ke85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7um85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sd87_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sd86_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sl87_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sj86_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sx85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sa82_%28cp150%29_firmware, cpe:/o:siemens:siprotec_5_7ke85_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7ut82_%28cp150%29_firmware, cpe:/o:siemens:siprotec_5_7sl86_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sa82_%28cp100%29_firmware, cpe:/o:siemens:siprotec_5_7st85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7ut87_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sj81_%28cp100%29_firmware, cpe:/o:siemens:siprotec_5_7sk85_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sa86_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7sa87_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sj85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sa84_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7ss85_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_6md84_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_6md89_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sj86_%28cp200%29_firmware, cpe:/o:siemens:siprotec_5_7ut87_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7sl86_%28cp300%29_firmware, cpe:/o:siemens:siprotec_5_7ss85_%28cp200%29_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 7/9/2024

Vulnerability Publication Date: 7/9/2024

Reference Information

CVE: CVE-2024-38867

CWE: 326

Detections

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