How severe is CVE-2017-9945?

CVE-2017-9945 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-9945 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9945?

CVE-2017-9945 affects Siemens 7km Pac Switched Ethernet Profinet Expansion Module Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9945?

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

When was CVE-2017-9945 published?

CVE-2017-9945 was published on 2017-08-30 and last updated on 2026-06-17.

CVE-2017-9945

CVE-2017-9945 is a medium-severity vulnerability in Siemens 7km Pac Switched Ethernet Profinet Expansion Module Firmware with a CVSS 3.x base score of 6.5. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.1
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Siemens 7km Pac Switched Ethernet Profinet Expansion Module Firmware
Published: 2017-08-30
Last modified: 2026-06-17

Description

In the Siemens 7KM PAC Switched Ethernet PROFINET expansion module (All versions < V2.1.3), a Denial-of-Service condition could be induced by a specially crafted PROFINET DCP packet sent as a local Ethernet (Layer 2) broadcast. The affected component requires a manual restart via the main device to recover.

Frequently asked questions

What is CVE-2017-9945?: In the Siemens 7KM PAC Switched Ethernet PROFINET expansion module (All versions < V2.1.3), a Denial-of-Service condition could be induced by a specially crafted PROFINET DCP packet sent as a local Ethernet (Layer 2) broadcast. The affected component requires a manual restart via the main device to recover.
How severe is CVE-2017-9945?: CVE-2017-9945 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-9945 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9945?: CVE-2017-9945 affects Siemens 7km Pac Switched Ethernet Profinet Expansion Module Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9945?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-9945 published?: CVE-2017-9945 was published on 2017-08-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:siemens:7km_pac_switched_ethernet_profinet_expansion_module_firmware:*:*:*:*:*:*:*:*

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