CASCACascade Atlas

Evidence dossier

CVE-2017-12235

CVE-2017-12235

64.1–79.8Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

A vulnerability in the implementation of the PROFINET Discovery and Configuration Protocol (PN-DCP) for Cisco IOS 12.2 through 15.6 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper parsing of ingress PN-DCP Identify Request packets destined to an affected device. An attacker could exploit this vulnerability by sending a crafted PN-DCP Identify Request packet to an affected device and then continuing to send normal PN-DCP Identify Request packets to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to process PROFINET messages. Beginning with Cisco IOS Software Release 12.2(52)SE, PROFINET is enabled by default on all the base switch module and expansion-unit Ethernet ports. Cisco Bug IDs: CSCuz47179.

State
PUBLISHED
Published
Sep 28, 2017
Updated
Jan 12, 2026
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS7.13%

2026-07-18 · v2026.06.15 · percentile 93.5%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

ciscooriginal assertion
container

A vulnerability in the implementation of the PROFINET Discovery and Configuration Protocol (PN-DCP) for Cisco IOS 12.2 through 15.6 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper parsing of ingress PN-DCP Identify Request packets destined to an affected device. An attacker could exploit this vulnerability by sending a crafted PN-DCP Identify Request packet to an affected device and then continuing to send normal PN-DCP Identify Request packets to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to process PROFINET messages. Beginning with Cisco IOS Software Release 12.2(52)SE, PROFINET is enabled by default on all the base switch module and expansion-unit Ethernet ports. Cisco Bug IDs: CSCuz47179.

CVEderivative copy
container

CVE Program Container

CISA KEVoriginal assertion
observed_exploitation

Cisco IOS Software for Cisco Industrial Ethernet Switches PROFINET Denial-of-Service Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.071280000000; percentile 0.935470000000

Applicability

Cited product scope

Trace impact →
n/aCisco IOS
[{"status": "affected", "version": "Cisco IOS"}]unknown
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-e_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-nx_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16t67-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16t67p-g-e_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-e_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-n_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-x_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_24t67-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4s-ts-g-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4s-ts-g-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-g-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-g-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-g-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-g-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_4ts-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_8t67-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_8t67p-g-e_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-b_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-e_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-g-n_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_8tc-l_switch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:industrial_ethernet_2000_series_firmware:15.2\(5.4.32i\)e2:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*; start including 12.2; end including 15.6supported

Assessments

CVSS by origin

7.5
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.