A vulnerability in the SNMP subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to…

Description

A vulnerability in the SNMP subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper error handling when parsing SNMP requests. An attacker could exploit this vulnerability by sending a crafted 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 SNMP v2c 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 SNMP v3, the attacker must have valid SNMP user credentials for the affected system.

Timeline

Scores

EPSS (exploitation in 30 days)

0.76% · top 44% of all CVEs (9 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.

Affected products

• Cisco · IOS

  • affected 12.2(53)SE1
  • affected 12.2(55)SE
  • affected 12.2(50)SE2
  • affected 12.2(50)SE1
  • affected 12.2(50)SE5
  • affected 12.2(53)SE
  • affected 12.2(55)SE3
  • affected 12.2(55)SE2
  • affected 12.2(52)SE
  • affected 12.2(58)SE
  • affected 12.2(50)SE3
  • affected 12.2(55)SE1
  • affected 12.2(53)SE2
  • affected 12.2(52)SE1
  • affected 12.2(54)SE
  • affected 12.2(50)SE4
  • affected 12.2(50)SE
  • affected 12.2(58)SE1
  • affected 12.2(55)SE4
  • affected 12.2(58)SE2
  • affected 12.2(55)SE5
  • affected 12.2(55)SE6
  • affected 12.2(55)SE7
  • affected 12.2(55)SE8
  • affected 12.2(55)SE9
  • affected 12.2(55)SE10
  • affected 12.2(55)SE11
  • affected 12.2(55)SE12
  • affected 12.2(55)SE13
  • affected 12.2(53)EX
  • affected 12.2(52)EX
  • affected 12.2(55)EX
  • affected 12.2(52)EX1
  • affected 12.2(55)EX1
  • affected 12.2(55)EX2
  • affected 12.2(55)EX3
  • affected 12.2(58)EX
  • affected 12.2(55)EY
  • affected 12.2(52)EY1
  • affected 12.2(52)EY
  • and 854 more

• Cisco · Cisco IOS XE Software

  • affected 3.2.0SG
  • affected 3.2.1SG
  • affected 3.2.2SG
  • affected 3.2.3SG
  • affected 3.2.4SG
  • affected 3.2.5SG
  • affected 3.2.6SG
  • affected 3.2.7SG
  • affected 3.2.8SG
  • affected 3.2.9SG
  • affected 3.2.10SG
  • affected 3.2.11SG
  • affected 3.7.0S
  • affected 3.7.1S
  • affected 3.7.2S
  • affected 3.7.3S
  • affected 3.7.4S
  • affected 3.7.5S
  • affected 3.7.6S
  • affected 3.7.7S
  • affected 3.7.4aS
  • affected 3.7.2tS
  • affected 3.7.0bS
  • affected 3.7.1aS
  • affected 3.3.0SG
  • affected 3.3.2SG
  • affected 3.3.1SG
  • affected 3.8.0S
  • affected 3.8.1S
  • affected 3.8.2S
  • affected 3.9.1S
  • affected 3.9.0S
  • affected 3.9.2S
  • affected 3.9.1aS
  • affected 3.9.0aS
  • affected 3.2.0SE
  • affected 3.2.1SE
  • affected 3.2.2SE
  • affected 3.2.3SE
  • affected 3.3.0SE
  • and 414 more

What to do

Exploitation: The Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2025-2167 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2025-20175](https://cveledger.app/badge/CVE-2025-20175.svg)](https://cveledger.app/cve/CVE-2025-20175)

Record last updated 5 Feb 2025, 16:54 UTC.