CVE Enrichment

CVSS
7.7 HIGH
EPSS
41.50%
EPSS Percentile
98.67%
CISA KEV
YES — Known Exploited Vulnerability

Description

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow the following: An authenticated, remote attacker with low privileges could cause a denial of service (DoS) condition on an affected device that is running Cisco IOS Software or Cisco IOS XE Software. To cause the DoS, the attacker must have the SNMPv2c or earlier read-only community string or valid SNMPv3 user credentials. An authenticated, remote attacker with high privileges could execute code as the root user on an affected device that is running Cisco IOS XE Software. To execute code as the root user, the attacker must have the SNMPv1 or v2c read-only community string or valid SNMPv3 user credentials and administrative or privilege 15 credentials on the affected device. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device over IPv4 or IPv6 networks. This vulnerability is due to a stack overflow condition in the SNMP subsystem of the affected software. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system. Note: This vulnerability affects all versions of SNMP.

Technical Details

CVSS Version
3.1
CNA / NVD Source
psirt@cisco.com
Published
25-Sep-2025 01:15
Last Modified
26-Sep-2026 07:10
EPSS Date
2026-10-20
CWE
CWE-121

CVSS Vector

CVSS:3.1 AV:N / AC:L / PR:L / UI:N / S:C / C:N / I:N / A:H

CISA KEV Details

Date Added
2025-09-29
Remediation Due
2025-10-20
Known Ransomware Campaign Use
Unknown
Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-x4LPhte ; https://nvd.nist.gov/vuln/detail/CVE-2025-20352

Affected Products / Versions

References

Last enrichment sync: 21-Oct-2026 19:04
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

CVE (14)

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Malware (10)

People (5)

Threat Actors (10)

MITRE ATT&CK (15)

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Vendors (1)

Products (13)

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Tools (6)

Industries (10)

Countries (9)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.