How severe is CVE-2017-2681?

CVE-2017-2681 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-2017-2681 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-2681?

CVE-2017-2681 primarily affects Siemens Simatic Cp 343-1 Std Firmware. In total, 97 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-2681?

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

When was CVE-2017-2681 published?

CVE-2017-2681 was published on 2017-05-11 and last updated on 2026-06-17.

CVE-2017-2681

CVE-2017-2681 is a medium-severity vulnerability in Siemens Simatic Cp 343-1 Std 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.1
CVSS v4: 7.1
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Siemens Simatic Cp 343-1 Std Firmware
Published: 2017-05-11
Last modified: 2026-06-17

Description

Specially crafted PROFINET DCP packets sent on a local Ethernet segment (Layer 2) to an affected product could cause a denial of service condition of that product. Human interaction is required to recover the system. PROFIBUS interfaces are not affected.

Frequently asked questions

What is CVE-2017-2681?: Specially crafted PROFINET DCP packets sent on a local Ethernet segment (Layer 2) to an affected product could cause a denial of service condition of that product. Human interaction is required to recover the system. PROFIBUS interfaces are not affected.
How severe is CVE-2017-2681?: CVE-2017-2681 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-2017-2681 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-2681?: CVE-2017-2681 primarily affects Siemens Simatic Cp 343-1 Std Firmware. In total, 97 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-2681?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-2681 published?: CVE-2017-2681 was published on 2017-05-11 and last updated on 2026-06-17.

References

Affected products (97)

cpe:2.3:o:siemens:simatic_cp_343-1_std_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_343-1_lean_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_343-1_adv_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_443-1_std_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_443-1_adv_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_443-1_opc-ua_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1243-1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cm_1542-1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1543sp-1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1542sp-1_irc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1543-1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_rf650r_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_rf680r_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_rf685r_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1616_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1604_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_dk-16xx_pn_io_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x200_irt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x408_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x414_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xm400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xr500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_w700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_m-800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_s615_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:softnet_profinet_io_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:softnet_profinet_io_firmware:14:-:*:*:*:*:*:*
cpe:2.3:o:siemens:ie\/pb-link_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ie\/as-i_link_pn_io_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_teleservice_adapter_standard_modem_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_teleservice_adapter_ie_basic_modem_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_teleservice_adapter_ie_advanced_modem_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:sitop_psu8600_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ups1600_profinet_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_et_200al_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_et_200ecopn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_et_200m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_et_200mp_firmware:*:*:*:*:*:*:*:*

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