Vulnerability Intelligence Report
Cisco IOS Software for Cisco Integrated Services Routers Denial-of-Service Vulnerability
CVE-2017-12232
A vulnerability in the implementation of a protocol in Cisco Integrated Services Routers Generation 2 (ISR G2) Routers running Cisco IOS 15.0 through 15.6 could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to a misclassification of Ethernet frames. An attacker could exploit this vulnerability by sending a crafted Ethernet frame to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvc03809.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
6.5
MEDIUM
Exploitability:2.9
Impact Score:3.6
EPSS Probability:2.17%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-399 ↗CWE-399
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| cisco | ios | all |
| cisco | 1000_integrated_services_router | all |
| cisco | 1100-4g\/6g_integrated_services_router | all |
| cisco | 1100-4g_integrated_services_router | all |
| cisco | 1100-4gltegb_integrated_services_router | all |
| cisco | 1100-4gltena_integrated_services_router | all |
| cisco | 1100-8p_integrated_services_router | all |
| cisco | 1100-lte_integrated_services_router | all |
| cisco | 1100_integrated_services_router | all |
| cisco | 1101-4p_integrated_services_router | all |
| cisco | 1101_integrated_services_router | all |
| cisco | 1109-2p_integrated_services_router | all |
| cisco | 1109-4p_integrated_services_router | all |
| cisco | 1109_integrated_services_router | all |
| cisco | 1111x-8p_integrated_services_router | all |
| cisco | 1111x_integrated_services_router | all |
| cisco | 111x_integrated_services_router | all |
| cisco | 1120_integrated_services_router | all |
| cisco | 1131_integrated_services_router | all |
| cisco | 1160_integrated_services_router | all |
| cisco | 1801_integrated_service_router | all |
| cisco | 1802_integrated_service_router | all |
| cisco | 1803_integrated_service_router | all |
| cisco | 1811_integrated_service_router | all |
| cisco | 1812_integrated_service_router | all |
| cisco | 1841_integrated_service_router | all |
| cisco | 1861_integrated_service_router | all |
| cisco | 1905_integrated_services_router | all |
| cisco | 1906c_integrated_services_router | all |
| cisco | 1921_integrated_services_router | all |
| cisco | 1941_integrated_services_router | all |
| cisco | 1941w_integrated_services_router | all |
| cisco | 4000_integrated_services_router | all |
| cisco | 422_integrated_services_router | all |
| cisco | 4221_integrated_services_router | all |
| cisco | 4321\/k9-rf_integrated_services_router | all |
| cisco | 4321\/k9-ws_integrated_services_router | all |
| cisco | 4321\/k9_integrated_services_router | all |
| cisco | 4321_integrated_services_router | all |
| cisco | 4331\/k9-rf_integrated_services_router | all |
| cisco | 4331\/k9-ws_integrated_services_router | all |
| cisco | 4331\/k9_integrated_services_router | all |
| cisco | 4331_integrated_services_router | all |
| cisco | 4351\/k9-rf_integrated_services_router | all |
| cisco | 4351\/k9-ws_integrated_services_router | all |
| cisco | 4351\/k9_integrated_services_router | all |
| cisco | 4351_integrated_services_router | all |
| cisco | 4431_integrated_services_router | all |
| cisco | 44461_integrated_services_router | all |
| cisco | 4451-x_integrated_services_router | all |
| cisco | 4451_integrated_services_router | all |
| cisco | 4461_integrated_services_router | all |
| cisco | 829_industrial_integrated_services_router | all |
| cisco | 829_industrial_integrated_services_routers | all |
| cisco | 829_integrated_services_router | all |
| cisco | 860vae-w_integrated_services_router | all |
| cisco | 861_integrated_services_router | all |
| cisco | 861w_integrated_services_router | all |
| cisco | 866vae_integrated_services_router | all |
| cisco | 867_integrated_services_router | all |
| cisco | 867vae_integrated_services_router | all |
| cisco | 871_integrated_services_router | all |
| cisco | 880-voice_integrated_services_router | all |
| cisco | 880_3g_integrated_services_router | all |
| cisco | 881-cube_integrated_services_router | all |
| cisco | 881_3g_integrated_services_router | all |
| cisco | 881_integrated_services_router | all |
| cisco | 881w_integrated_services_router | all |
| cisco | 886_integrated_services_router | all |
| cisco | 886va-cube_integrated_services_router | all |
| cisco | 886va-w_integrated_services_router | all |
| cisco | 886va_integrated_services_router | all |
| cisco | 886vag_3g_integrated_services_router | all |
| cisco | 887_integrated_services_router | all |
| cisco | 887v_integrated_services_router | all |
| cisco | 887va-cube_integrated_services_router | all |
| cisco | 887va-w_integrated_services_router | all |
| cisco | 887va_integrated_services_router | all |
| cisco | 887vag_3g_integrated_services_router | all |
| cisco | 887vam-w_integrated_services_router | all |
| cisco | 887vamg_3g_integrated_services_router | all |
| cisco | 888-cube_integrated_services_router | all |
| cisco | 888_integrated_services_router | all |
| cisco | 888e-cube_integrated_services_router | all |
| cisco | 888e_integrated_services_router | all |
| cisco | 888eg_3g_integrated_services_router | all |
| cisco | 888w_integrated_services_router | all |
| cisco | 891-24x_integrated_services_router | all |
| cisco | 891_integrated_services_router | all |
| cisco | 891w_integrated_services_router | all |
| cisco | 892_integrated_services_router | all |
| cisco | 892f-cube_integrated_services_router | all |
| cisco | 892w_integrated_services_router | all |
| cisco | asr_1000 | all |
| cisco | asr_1000-esp100 | all |
| cisco | asr_1000-esp100-x | all |
| cisco | asr_1000-esp200-x | all |
| cisco | asr_1000-x | all |
| cisco | asr_1000_ | all |
| cisco | asr_1001 | all |
| cisco | asr_1001-hx | all |
| cisco | asr_1001-hx_r | all |
| cisco | asr_1001-x | all |
| cisco | asr_1001-x_r | all |
| cisco | asr_1002 | all |
| cisco | asr_1002-hx | all |
| cisco | asr_1002-hx_r | all |
| cisco | asr_1002-x | all |
| cisco | asr_1002-x_r | all |
| cisco | asr_1004 | all |
| cisco | asr_1006 | all |
| cisco | asr_1006-x | all |
| cisco | asr_1009-x | all |
| cisco | asr_1013 | all |
| cisco | asr_1023 | all |
| cisco | catalyst_8200 | all |
| cisco | catalyst_8300 | all |
| cisco | catalyst_8300-1n1s-4t2x | all |
| cisco | catalyst_8300-1n1s-6t | all |
| cisco | catalyst_8300-2n2s-4t2x | all |
| cisco | catalyst_8300-2n2s-6t | all |
| cisco | catalyst_8500 | all |
| cisco | catalyst_8500-4qc | all |
| cisco | catalyst_8500l | all |
| cisco | catalyst_8510csr | all |
| cisco | catalyst_8510msr | all |
| cisco | catalyst_8540csr | all |
| cisco | catalyst_8540msr | all |
| cisco | cloud_services_router_1000v | all |
| cisco | integrated_services_virtual_router | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Cisco Systems, Inc. · Hosted Service · USA |
| Reserved | 2017-08-03T00:00:00 |
| Published | 2017-09-28T07:00:00 |
| Patch Date | 2017-09-28 |
| Last Updated | 2026-01-12T21:40:58 |
Community Chatter & Buzz