PT-2025-39300 · Cisco · Cisco Ios Xe

Published 2025-09-24 · Updated 2025-09-25 · CVE-2025-20312

Positive Technologies (AI Summary)

CVSS v3.1

7.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software (affected versions not specified)

Description A flaw exists in the Simple Network Management Protocol (SNMP) subsystem that may allow a remote attacker with valid credentials to disrupt service. The issue stems from incorrect error handling during the processing of a specific SNMP request. An attacker could exploit this by sending a crafted SNMP request, potentially causing the device to reload unexpectedly, leading to a denial of service. This affects SNMP versions 1, 2c, and 3. Exploitation via SNMPv2c or earlier requires knowledge of a valid SNMP community string, while SNMPv3 exploitation requires valid user credentials.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

BDU:2025-11719

CVE-2025-20312

Affected Products

Cisco Ios Xe

References · 7

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmpwred-x3MJyf5M · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-20312 · Security Note
• https://bdu.fstec.ru/vul/2025-11719 · Security Note
• https://twitter.com/0dayPublishing/status/1970903511979196742 · Twitter Post
• https://twitter.com/CVEnew/status/1970996083699716226 · Twitter Post
• https://twitter.com/leftSECURE/status/1971300024782111038 · Twitter Post
• https://t.me/CVEtracker/33261 · Telegram Post