Cisco IOS XE Software SD WAN vDaemon DoS (cisco-sa-iosxe-sdwdos-4zeEeC9w)

high Nessus Plugin ID 148327
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VPR Score: 3.6


The remote device is missing a vendor-supplied security patch


According to its self-reported version, Cisco IOS XE SD-WAN Software is affected by a denial of service vulnerability due to insufficient handling of malformed packets. An unauthenticated, remote attacker can exploit this by sending crafted traffic to an affected device, which could allow the attacker to cause the device to reload, resulting in a DoS condition.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvu95283

See Also

Plugin Details

Severity: High

ID: 148327

File Name: cisco-sa-iosxe-sdwdos-4zeEeC9w.nasl

Version: 1.4

Type: combined

Family: CISCO

Published: 4/6/2021

Updated: 4/7/2021

Dependencies: cisco_ios_xe_version.nasl

Risk Information

Risk Factor: High

VPR Score: 3.6

CVSS Score Source: CVE-2021-1431

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Host/Cisco/SDWAN/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2021

Vulnerability Publication Date: 3/24/2021

Reference Information

CVE: CVE-2021-1431

IAVA: 2021-A-0141


CISCO-SA: cisco-sa-iosxe-sdwdos-4zeEeC9w

CWE: 20