Detections
Analytics

Cisco IOS XE Software Simple Network Management Protocol DoS (cisco-sa-snmpwred-x3MJyf5M)

high Nessus Plugin ID 271804

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS-XE Software is affected by a vulnerability.

 - A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling when parsing a specific SNMP request. An attacker could exploit this vulnerability by sending a specific SNMP request to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMPv2c or earlier, the attacker must know a valid read-write or read-only SNMP community string for the affected system. To exploit this vulnerability through SNMPv3, the attacker must have valid SNMP user credentials for the affected system. (CVE-2025-20312)

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwp03900

See Also

http://www.nessus.org/u?cbdfa431

http://www.nessus.org/u?acad5d9e

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwp03900

Plugin Details

Severity: High

ID: 271804

File Name: cisco-sa-snmpwred-x3MJyf5M-iosxe.nasl

Version: 1.1

Type: combined

Family: CISCO

Published: 10/28/2025

Updated: 10/28/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2025-20312

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Host/Cisco/IOS-XE/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2025

Vulnerability Publication Date: 9/24/2025

Reference Information

CVE: CVE-2025-20312

CWE: 835

CISCO-SA: cisco-sa-snmpwred-x3MJyf5M

IAVA: 2025-A-0701

CISCO-BUG-ID: CSCwp03900