Vulnerability Monitor

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CVE-2019-12656


A vulnerability in the IOx application environment of multiple Cisco platforms could allow an unauthenticated, remote attacker to cause the IOx web server to stop processing HTTPS requests, resulting in a denial of service (DoS) condition. The vulnerability is due to a Transport Layer Security (TLS) implementation issue. An attacker could exploit this vulnerability by sending crafted TLS packets to the IOx web server on an affected device. A successful exploit could allow the attacker to cause the IOx web server to stop processing HTTPS requests, resulting in a DoS condition.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 30 products from cisco, from cisco, from cisco and 27 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.


Published

2019-09-25T21:15:10.827

Last Modified

2024-11-21T04:23:16.617

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-20
  • Type: Primary
    NVD-CWE-noinfo

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios 1.6.0.0 Yes
Operating System cisco ios 1.8.0 Yes
Operating System cisco industrial_ethernet_2000_series_firmware 15.2\(6\)e Yes
Hardware cisco ie_2000-16ptc-g - No
Hardware cisco ie_2000-16t67 - No
Hardware cisco ie_2000-16t67p - No
Hardware cisco ie_2000-16tc - No
Hardware cisco ie_2000-16tc-g - No
Hardware cisco ie_2000-16tc-g-e - No
Hardware cisco ie_2000-16tc-g-n - No
Hardware cisco ie_2000-16tc-g-x - No
Hardware cisco ie_2000-24t67 - No
Hardware cisco ie_2000-4s-ts-g - No
Hardware cisco ie_2000-4t - No
Hardware cisco ie_2000-4t-g - No
Hardware cisco ie_2000-4ts - No
Hardware cisco ie_2000-4ts-g - No
Hardware cisco ie_2000-8t67 - No
Hardware cisco ie_2000-8t67p - No
Hardware cisco ie_2000-8tc - No
Hardware cisco ie_2000-8tc-g - No
Hardware cisco ie_2000-8tc-g-e - No
Hardware cisco ie_2000-8tc-g-n - No
Operating System cisco ic3000_firmware - Yes
Hardware cisco ic3000 - No
Operating System cisco ie_4000_firmware - Yes
Hardware cisco ie_4000 - No
Operating System cisco cgr_1000_firmware - Yes
Hardware cisco cgr_1000 - No
Operating System cisco ir510_wpan_firmware - Yes
Hardware cisco ir510_wpan - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.