SARA / Free Tools / CVE / CVE-2023-2673

CVE-2023-2673 — Improper Input Validation vulnerability in PHOENIX CONTACT FL/TC MGUARD Family i

Improper Input Validation vulnerability in PHOENIX CONTACT FL/TC MGUARD Family in multiple versions may allow UDP packets to bypass the filter rules and access the solely connected device behind the MGUARD which can be used for flooding attacks.

CVSS

5.3 MEDIUM

EPSS

2.00% (top 94.10%)

CWE

CWE-1287

Published

2023-06-13T06:16:18.557Z

Last modified

2025-01-03T01:57:54.039Z

CVSS vector

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

01What is this vulnerability?

02Affected products

Vendor	Product	Versions
PHOENIX CONTACT	FL MGUARD 2102	0
PHOENIX CONTACT	FL MGUARD 4102 PCI	0
PHOENIX CONTACT	FL MGUARD 4102 PCIE	0
PHOENIX CONTACT	FL MGUARD 4302	0
PHOENIX CONTACT	FL MGUARD CENTERPORT	0
PHOENIX CONTACT	FL MGUARD CENTERPORT VPN	1000 — 0
PHOENIX CONTACT	FL MGUARD CORE TX	0
PHOENIX CONTACT	FL MGUARD CORE TX VPN	0
PHOENIX CONTACT	FL MGUARD DELTA TX/TX	0
PHOENIX CONTACT	FL MGUARD DELTA TX/TX VPN	0
PHOENIX CONTACT	FL MGUARD GT/GT	0
PHOENIX CONTACT	FL MGUARD GT/GT VPN	0
PHOENIX CONTACT	FL MGUARD PCI4000	0
PHOENIX CONTACT	FL MGUARD PCI4000 VPN	0
PHOENIX CONTACT	FL MGUARD PCIE4000	0
PHOENIX CONTACT	FL MGUARD PCIE4000 VPN	0
PHOENIX CONTACT	FL MGUARD RS2000 TX/TX	B — 0
PHOENIX CONTACT	FL MGUARD RS2000 TX/TX VPN	0
PHOENIX CONTACT	FL MGUARD RS2005 TX VPN	0
PHOENIX CONTACT	FL MGUARD RS4000 TX/TX	M — 0
PHOENIX CONTACT	FL MGUARD RS4000 TX/TX	P — 0
PHOENIX CONTACT	FL MGUARD RS4000 TX/TX VPN	0
PHOENIX CONTACT	FL MGUARD RS4000 TX/TX VPN	0
PHOENIX CONTACT	FL MGUARD RS4004 TX/DTX	0
PHOENIX CONTACT	FL MGUARD RS4004 TX/DTX VPN	0
PHOENIX CONTACT	FL MGUARD SMART2	0
PHOENIX CONTACT	FL MGUARD SMART2 VPN	0

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

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

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: 2023-06-13T06:16:18.557Z
Last modified: 2025-01-03T01:57:54.039Z

09References

cert.vde.com — https://cert.vde.com/en/advisories/VDE-2023-010/

Want this in your SOAR or SIEM?
SARA's API returns EPSS, CVSS, KEV, and an analyst-grade summary in one call.

Read the API reference →

EPSS detail → Search KEV → Ask SARA →