CVE-2023-46156 — Affected devices improperly handle specially crafted packets sent to port 102/tc

Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a denial of service condition. A restart is needed to restore normal operations.

01What is this vulnerability?

Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a denial of service condition. A restart is needed to restore normal operations.

02Affected products

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-12-12T11:27:10.086Z
• Last modified: 2026-02-25T16:34:35.639Z

09References

• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-592380.pdf
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-280603.pdf
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/html/ssa-592380.html
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/html/ssa-280603.html