No exploitation reported

CVE-2019-9744

No exploitation reported by the sources we read.

Published2019-03-26
WeaknessCWE-384

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered on PHOENIX CONTACT FL NAT SMCS 8TX, FL NAT SMN 8TX, FL NAT SMN 8TX-M, and FL NAT SMN 8TX-M-DMG devices. There is unauthorized access to the WEB-UI by attackers arriving from the same source IP address as an authenticated user, because this IP address is used as a session identifier.

Timeline

dates in UTC

2019-03-2620:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-9744?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-9744?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Phoenixcontact fl nat smcs 8tx firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Phoenixcontact fl nat smn 8tx firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Phoenixcontact fl nat smn 8tx-m firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-19-155-02 CISA4 known affected
PHOENIX CONTACT FL NAT SMx
industrial Ethernet switch FL NAT SMCS 8TX: (2989378) · industrial Ethernet switch FL NAT SMN 8TX-M: (2702443) · industrial Ethernet switch FL NAT SMN 8TX: (2989365) · +1 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-19-155-02 · 4 productsPhoenix Contact recommends affected users operate the devices in closed networks or protected with a suitable firewall.
Mitigation from the vendor CISA ICSA-19-155-02 · 4 productsPhoenix Contact recommends that users consider the following steps to protect the device from an attacker who has gained access to the closed network, or if there is a possibility that multiple users might share a VPN connection with a single endpoint IP:
Mitigation from the vendor CISA ICSA-19-155-02 · 4 productsLog off from the WEB-UI immediately after administration.
Mitigation from the vendor CISA ICSA-19-155-02 · 4 productsDisable the WEB-UI and use configuration access via SNMP instead. Ensure the system password is strong as this is also the SNMP write community.
Mitigation from the vendor CISA ICSA-19-155-02 · 4 productsEnsure the system password is strong as this is also the SNMP write community.
Mitigation from the vendor CISA ICSA-19-155-02 · 4 productsPlease see VDE-2019-006 at the following location for more details.

Advisories and patches

cert.vde.comMitigation · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.08.8read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
NVDweakness (CWE)CWE-384read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2019-03-26
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-9744?

Is CVE-2019-9744 actively exploited?

Active exploitation of CVE-2019-9744 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-9744?

CVE-2019-9744 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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