CVE-2021-34727

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2021-34727
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-09-23 03:15:00 UTC
Updated2023-11-07 03:36:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-120

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco 1000 Integrated Services Router - All All All
Hardware Cisco 1100-4g/6g Integrated Services Router - All All All
Hardware Cisco 1100-4p Integrated Services Router - All All All
Hardware Cisco 1100-8p Integrated Services Router - All All All
Hardware Cisco 1100 Integrated Services Router - All All All
Hardware Cisco 1101-4p Integrated Services Router - All All All
Hardware Cisco 1101 Integrated Services Router - All All All
Hardware Cisco 1109-2p Integrated Services Router - All All All
Hardware Cisco 1109-4p Integrated Services Router - All All All
Hardware Cisco 1109 Integrated Services Router - All All All
Hardware Cisco 1111x-8p Integrated Services Router - All All All
Hardware Cisco 1111x Integrated Services Router - All All All
Hardware Cisco 111x Integrated Services Router - All All All
Hardware Cisco 1120 Integrated Services Router - All All All
Hardware Cisco 1160 Integrated Services Router - All All All
Hardware Cisco 4000 Integrated Services Router - All All All
Hardware Cisco 4221 Integrated Services Router - All All All
Hardware Cisco 422 Integrated Services Router - All All All
Hardware Cisco 4321 Integrated Services Router - All All All
Hardware Cisco 4331 Integrated Services Router - All All All
Hardware Cisco 4351 Integrated Services Router - All All All
Hardware Cisco 4431 Integrated Services Router - All All All
Hardware Cisco 4451-x Integrated Services Router - All All All
Hardware Cisco 4451 Integrated Services Router - All All All
Hardware Cisco 4461 Integrated Services Router - All All All
Hardware Cisco Asr 1000 - All All All
Hardware Cisco Asr 1000-esp100 - All All All
Hardware Cisco Asr 1000-x - All All All
Hardware Cisco Asr 1000 Series - All All All
Hardware Cisco Asr 1000 Series Route Processor Rp2 - All All All
Hardware Cisco Asr 1000 Series Route Processor Rp3 - All All All
Hardware Cisco Asr 1001 - All All All
Hardware Cisco Asr 1001-hx - All All All
Hardware Cisco Asr 1001-hx R - All All All
Hardware Cisco Asr 1001-x - All All All
Hardware Cisco Asr 1001-x R - All All All
Hardware Cisco Asr 1002 - All All All
Hardware Cisco Asr 1002-hx - All All All
Hardware Cisco Asr 1002-hx R - All All All
Hardware Cisco Asr 1002-x - All All All
Hardware Cisco Asr 1002-x R - All All All
Hardware Cisco Asr 1004 - All All All
Hardware Cisco Asr 1006 - All All All
Hardware Cisco Asr 1006-x - All All All
Hardware Cisco Asr 1009-x - All All All
Hardware Cisco Asr 1013 - All All All
Hardware Cisco Asr 1023 - All All All
Hardware Cisco Csr 1000v - All All All
Operating System Cisco Ios Xe Sd-wan - All All All
Hardware Cisco Isr 1000 - All All All
Hardware Cisco Isr 1100 - All All All
Hardware Cisco Isr 1100-4g/6g - All All All
Hardware Cisco Isr 1100-4p - All All All
Hardware Cisco Isr 1100-8p - All All All
Hardware Cisco Isr 1101 - All All All
Hardware Cisco Isr 1101-4p - All All All
Hardware Cisco Isr 1109 - All All All
Hardware Cisco Isr 1109-2p - All All All
Hardware Cisco Isr 1109-4p - All All All
Hardware Cisco Isr 1111x - All All All
Hardware Cisco Isr 1111x-8p - All All All
Hardware Cisco Isr 111x - All All All
Hardware Cisco Isr 1120 - All All All
Hardware Cisco Isr 1160 - All All All
Hardware Cisco Isr 4000 - All All All
Hardware Cisco Isr 422 - All All All
Hardware Cisco Isr 4221 - All All All
Hardware Cisco Isr 4321 - All All All
Hardware Cisco Isr 4331 - All All All
Hardware Cisco Isr 4351 - All All All
Hardware Cisco Isr 4431 - All All All
Hardware Cisco Isr 4451 - All All All
Hardware Cisco Isr 4451-x - All All All
Hardware Cisco Isr 4461 - All All All

References

ReferenceSourceLinkTags
Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability CISCO tools.cisco.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 317124 Cisco Internetwork Operating System (IOS) XE SD-WAN Software Buffer Overflow Vulnerability (cisco-sa-iosxesdwan-rbuffover-vE2OB6tp)
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report