How severe is CVE-2023-2673?

CVE-2023-2673 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-2673 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2673?

CVE-2023-2673 primarily affects Phoenixcontact Fl Mguard 2102 Firmware. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-2673?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-2673 published?

CVE-2023-2673 was published on 2023-06-13 and last updated on 2026-06-17.

CVE-2023-2673

CVE-2023-2673 is a medium-severity vulnerability in Phoenixcontact Fl Mguard 2102 Firmware with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1287.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1287
Affected product: Phoenixcontact Fl Mguard 2102 Firmware
Published: 2023-06-13
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-2673?: 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.
How severe is CVE-2023-2673?: CVE-2023-2673 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-2673 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2673?: CVE-2023-2673 primarily affects Phoenixcontact Fl Mguard 2102 Firmware. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-2673?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-2673 published?: CVE-2023-2673 was published on 2023-06-13 and last updated on 2026-06-17.

References

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

Affected products (26)

cpe:2.3:o:phoenixcontact:fl_mguard_2102_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_4102_pci_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_4102_pcie_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_4302_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_centerport_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_centerport_vpn-1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_core_tx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_core_tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_delta_tx\/tx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_delta_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_gt\/gt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_gt\/gt_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_pci4000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_pci4000_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_pcie4000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_pcie4000_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs2000_tx\/tx-b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs2000_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs2005_tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4000_tx\/tx-m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4000_tx\/tx-p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4000_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4004_tx\/dtx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4004_tx\/dtx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_smart2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_smart2_vpn_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Phoenixcontact Fl Mguard 2102 Firmware

CVE-2024-7699 — High (CVSS 8.8): An low privileged remote attacker can execute OS commands with root privileges due to improper neutralization of…
CVE-2024-43388 — High (CVSS 8.8): A low privileged remote attacker with write permissions can reconfigure the SNMP service due to improper input…
CVE-2024-43387 — High (CVSS 8.8): A low privileged remote attacker can read and write files as root due to improper neutralization of special elements in…
CVE-2024-43386 — High (CVSS 8.8): A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper…
CVE-2024-43385 — High (CVSS 8.8): A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper…
CVE-2024-43393 — High (CVSS 8.1): A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter,…

All CVEs affecting Phoenixcontact Fl Mguard 2102 Firmware →

Other CWE-1287 vulnerabilities

CVE-2024-51550 — Critical (CVSS 10.0): Data Validation / Data Sanitization vulnerabilities in Linux allows unvalidated and unsanitized data to be injected in…
CVE-2024-6298 — Critical (CVSS 10.0): Unauthorized file access in WEB Server in ABB ASPECT - Enterprise v3.08.01; NEXUS Series v3.08.01 ; MATRIX Series…
CVE-2026-44935 — Critical (CVSS 9.9): Missing validation of "valuesFrom" references in Helm Deployer of SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before…
CVE-2024-4879 — Critical (CVSS 9.8): ServiceNow has addressed an input validation vulnerability that was identified in Vancouver and Washington DC Now…
CVE-2021-32024 — Critical (CVSS 9.8): A remote code execution vulnerability in the BMP image codec of BlackBerry QNX SDP version(s) 6.4 to 7.1 could allow an…
CVE-2026-24307 — Critical (CVSS 9.3): Improper validation of specified type of input in M365 Copilot allows an unauthorized attacker to disclose information…

Browse all CWE-1287 vulnerabilities →