Vulnerability Monitor

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CVE-2021-34727

A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when an affected device processes traffic. An attacker could exploit this vulnerability by sending crafted traffic to the device. A successful exploit could allow the attacker to cause a buffer overflow and possibly execute arbitrary commands with root-level privileges, or cause the device to reload, which could result in a denial of service condition.

Published

2021-09-23T03:15:19.500

Last Modified

2024-11-21T06:11:03.730

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

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

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

10.0

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-120
  • Type: Primary
    CWE-120
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios_xe_sd-wan - Yes
Hardware cisco 1000_integrated_services_router - No
Hardware cisco 1100-4g\/6g_integrated_services_router - No
Hardware cisco 1100-4p_integrated_services_router - No
Hardware cisco 1100-8p_integrated_services_router - No
Hardware cisco 1100_integrated_services_router - No
Hardware cisco 1101-4p_integrated_services_router - No
Hardware cisco 1101_integrated_services_router - No
Hardware cisco 1109-2p_integrated_services_router - No
Hardware cisco 1109-4p_integrated_services_router - No
Hardware cisco 1109_integrated_services_router - No
Hardware cisco 1111x-8p_integrated_services_router - No
Hardware cisco 1111x_integrated_services_router - No
Hardware cisco 111x_integrated_services_router - No
Hardware cisco 1120_integrated_services_router - No
Hardware cisco 1160_integrated_services_router - No
Hardware cisco 4000_integrated_services_router - No
Hardware cisco 422_integrated_services_router - No
Hardware cisco 4221_integrated_services_router - No
Hardware cisco 4321_integrated_services_router - No
Hardware cisco 4331_integrated_services_router - No
Hardware cisco 4351_integrated_services_router - No
Hardware cisco 4431_integrated_services_router - No
Hardware cisco 4451-x_integrated_services_router - No
Hardware cisco 4451_integrated_services_router - No
Hardware cisco 4461_integrated_services_router - No
Hardware cisco asr_1000 - No
Hardware cisco asr_1000-esp100 - No
Hardware cisco asr_1000-x - No
Hardware cisco asr_1000_series - No
Hardware cisco asr_1000_series_route_processor_\(rp2\) - No
Hardware cisco asr_1000_series_route_processor_\(rp3\) - No
Hardware cisco asr_1001 - No
Hardware cisco asr_1001-hx - No
Hardware cisco asr_1001-hx_r - No
Hardware cisco asr_1001-x - No
Hardware cisco asr_1001-x_r - No
Hardware cisco asr_1002 - No
Hardware cisco asr_1002-hx - No
Hardware cisco asr_1002-hx_r - No
Hardware cisco asr_1002-x - No
Hardware cisco asr_1002-x_r - No
Hardware cisco asr_1004 - No
Hardware cisco asr_1006 - No
Hardware cisco asr_1006-x - No
Hardware cisco asr_1009-x - No
Hardware cisco asr_1013 - No
Hardware cisco asr_1023 - No
Hardware cisco csr_1000v - No
References