PT-2025-20279 · Cisco · Cisco Ios Xe Sd-Wan+1

Published 2025-05-07 · Updated 2025-07-11 · CVE-2025-20221

Positive Technologies (AI Summary)

CVSS v2.0

9.4

Critical

Base vector

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

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

Description A vulnerability in the packet filtering features could allow an unauthenticated, remote attacker to bypass Layer 3 and Layer 4 traffic filters. This issue is due to improper traffic filtering conditions on an affected device. An attacker could exploit this by sending a crafted packet to the affected device, potentially allowing them to bypass traffic filters and inject a crafted packet into the network.

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

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BDU:2025-11708

CVE-2025-20221

Affected Products

Cisco Ios Xe Sd-Wan

Cisco Ios Xe

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2025-20221 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-bypass-HHUVujdn · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-20221 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-11708 · Security Note
• https://t.me/cvetracker/23282 · Telegram Post
• https://twitter.com/CVEnew/status/1920246400698200067 · Twitter Post
• https://t.me/cvedetector/24746 · Telegram Post
• https://twitter.com/syedaquib77/status/1920725918978633988 · Twitter Post
• https://t.me/cvenotify/128547 · Telegram Post