CVE-2022-46353

Name: CVE-2022-46353
Creator: NVD / NIST
Published: 2022-12-13T16:15:25.853+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2022-46353 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP/HSR) (All versions < V3.2.7). The webserver of affected devices calculates session ids and nonces in an insecure manner. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP/HSR) (All versions < V3.2.7). The webserver of affected devices calculates session ids and nonces in an insecure manner. This could allow an unauthenticated remote attacker to brute-force session ids and hijack existing sessions.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.00%

58.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	6gk5204-0ba00-2mb2 Firmware	< 3.2.7
Siemens	6gk5204-0ba00-2kb2 Firmware	< 3.2.7
Siemens	6gk5204-0bs00-2na3 Firmware	< 3.2.7
Siemens	6gk5204-0bs00-3la3 Firmware	< 3.2.7
Siemens	6gk5204-0bs00-3pa3 Firmware	< 3.2.7

References

https://cert-portal.siemens.com/productcert/pdf/ssa-363821.pdfPatch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-363821.pdfPatch, Vendor Advisory

Timeline

Published: Dec 13, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-46353?

How severe is CVE-2022-46353?

CVE-2022-46353 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2022-46353?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-46353?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST