CVE-2025-20311
7.4
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Summary
A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cisco | Cisco IOS XE Software | 16.6.1 | affected |
| Cisco | Cisco IOS XE Software | 16.6.2 | affected |
| Cisco | Cisco IOS XE Software | 16.6.3 | affected |
| Cisco | Cisco IOS XE Software | 16.6.4 | affected |
| Cisco | Cisco IOS XE Software | 16.6.5 | affected |
| Cisco | Cisco IOS XE Software | 16.6.4a | affected |
| Cisco | Cisco IOS XE Software | 16.6.6 | affected |
| Cisco | Cisco IOS XE Software | 16.6.7 | affected |
| Cisco | Cisco IOS XE Software | 16.6.8 | affected |
| Cisco | Cisco IOS XE Software | 16.6.9 | affected |
| Cisco | Cisco IOS XE Software | 16.6.10 | affected |
| Cisco | Cisco IOS XE Software | 16.7.1 | affected |
| Cisco | Cisco IOS XE Software | 16.8.1 | affected |
| Cisco | Cisco IOS XE Software | 16.8.1a | affected |
| Cisco | Cisco IOS XE Software | 16.8.1s | affected |
| Cisco | Cisco IOS XE Software | 16.9.1 | affected |
| Cisco | Cisco IOS XE Software | 16.9.2 | affected |
| Cisco | Cisco IOS XE Software | 16.9.1s | affected |
| Cisco | Cisco IOS XE Software | 16.9.3 | affected |
| Cisco | Cisco IOS XE Software | 16.9.4 | affected |
| Cisco | Cisco IOS XE Software | 16.9.5 | affected |
| Cisco | Cisco IOS XE Software | 16.9.6 | affected |
| Cisco | Cisco IOS XE Software | 16.9.7 | affected |
| Cisco | Cisco IOS XE Software | 16.9.8 | affected |
| Cisco | Cisco IOS XE Software | 16.10.1 | affected |
| Cisco | Cisco IOS XE Software | 16.10.1s | affected |
| Cisco | Cisco IOS XE Software | 16.10.1e | affected |
| Cisco | Cisco IOS XE Software | 16.11.1 | affected |
| Cisco | Cisco IOS XE Software | 16.11.1b | affected |
| Cisco | Cisco IOS XE Software | 16.11.1s | affected |
| Cisco | Cisco IOS XE Software | 16.12.1 | affected |
| Cisco | Cisco IOS XE Software | 16.12.1s | affected |
| Cisco | Cisco IOS XE Software | 16.12.1c | affected |
| Cisco | Cisco IOS XE Software | 16.12.2 | affected |
| Cisco | Cisco IOS XE Software | 16.12.3 | affected |
| Cisco | Cisco IOS XE Software | 16.12.8 | affected |
| Cisco | Cisco IOS XE Software | 16.12.2s | affected |
| Cisco | Cisco IOS XE Software | 16.12.4 | affected |
| Cisco | Cisco IOS XE Software | 16.12.3s | affected |
| Cisco | Cisco IOS XE Software | 16.12.3a | affected |
| Cisco | Cisco IOS XE Software | 16.12.4a | affected |
| Cisco | Cisco IOS XE Software | 16.12.5 | affected |
| Cisco | Cisco IOS XE Software | 16.12.6 | affected |
| Cisco | Cisco IOS XE Software | 16.12.5b | affected |
| Cisco | Cisco IOS XE Software | 16.12.6a | affected |
| Cisco | Cisco IOS XE Software | 16.12.7 | affected |
| Cisco | Cisco IOS XE Software | 16.12.14 | affected |
| Cisco | Cisco IOS XE Software | 17.1.1 | affected |
| Cisco | Cisco IOS XE Software | 17.1.1s | affected |
| Cisco | Cisco IOS XE Software | 17.1.1t | affected |
| Cisco | Cisco IOS XE Software | 17.1.3 | affected |
| Cisco | Cisco IOS XE Software | 17.2.1 | affected |
| Cisco | Cisco IOS XE Software | 17.2.1a | affected |
| Cisco | Cisco IOS XE Software | 17.3.1 | affected |
| Cisco | Cisco IOS XE Software | 17.3.2 | affected |
| Cisco | Cisco IOS XE Software | 17.3.3 | affected |
| Cisco | Cisco IOS XE Software | 17.3.2a | affected |
| Cisco | Cisco IOS XE Software | 17.3.4 | affected |
| Cisco | Cisco IOS XE Software | 17.3.5 | affected |
| Cisco | Cisco IOS XE Software | 17.3.6 | affected |
| Cisco | Cisco IOS XE Software | 17.3.4b | affected |
| Cisco | Cisco IOS XE Software | 17.3.7 | affected |
| Cisco | Cisco IOS XE Software | 17.3.8 | affected |
| Cisco | Cisco IOS XE Software | 17.3.8a | affected |
| Cisco | Cisco IOS XE Software | 17.4.1 | affected |
| Cisco | Cisco IOS XE Software | 17.5.1 | affected |
| Cisco | Cisco IOS XE Software | 17.6.1 | affected |
| Cisco | Cisco IOS XE Software | 17.6.2 | affected |
| Cisco | Cisco IOS XE Software | 17.6.3 | affected |
| Cisco | Cisco IOS XE Software | 17.6.1y | affected |
| Cisco | Cisco IOS XE Software | 17.6.4 | affected |
| Cisco | Cisco IOS XE Software | 17.6.5 | affected |
| Cisco | Cisco IOS XE Software | 17.6.6 | affected |
| Cisco | Cisco IOS XE Software | 17.6.6a | affected |
| Cisco | Cisco IOS XE Software | 17.6.5a | affected |
| Cisco | Cisco IOS XE Software | 17.6.7 | affected |
| Cisco | Cisco IOS XE Software | 17.6.8 | affected |
| Cisco | Cisco IOS XE Software | 17.7.1 | affected |
| Cisco | Cisco IOS XE Software | 17.10.1 | affected |
| Cisco | Cisco IOS XE Software | 17.10.1b | affected |
| Cisco | Cisco IOS XE Software | 17.8.1 | affected |
| Cisco | Cisco IOS XE Software | 17.9.1 | affected |
| Cisco | Cisco IOS XE Software | 17.9.2 | affected |
| Cisco | Cisco IOS XE Software | 17.9.3 | affected |
| Cisco | Cisco IOS XE Software | 17.9.4 | affected |
| Cisco | Cisco IOS XE Software | 17.9.5 | affected |
| Cisco | Cisco IOS XE Software | 17.9.4a | affected |
| Cisco | Cisco IOS XE Software | 17.9.6 | affected |
| Cisco | Cisco IOS XE Software | 17.9.6a | affected |
| Cisco | Cisco IOS XE Software | 17.11.1 | affected |
| Cisco | Cisco IOS XE Software | 17.12.1 | affected |
| Cisco | Cisco IOS XE Software | 17.12.2 | affected |
| Cisco | Cisco IOS XE Software | 17.12.3 | affected |
| Cisco | Cisco IOS XE Software | 17.12.4 | affected |
| Cisco | Cisco IOS XE Software | 17.12.1z3 | affected |
| Cisco | Cisco IOS XE Software | 17.13.1 | affected |
| Cisco | Cisco IOS XE Software | 17.14.1 | affected |
| Cisco | Cisco IOS XE Software | 17.11.99SW | affected |
| Cisco | Cisco IOS XE Software | 17.15.1 | affected |
| Cisco | Cisco IOS XE Software | 17.15.2 | affected |
| Cisco | Cisco IOS XE Software | 17.15.2a | affected |
| Cisco | Cisco IOS XE Software | 17.15.2b | affected |
| Cisco | Cisco IOS XE Software | 17.16.1 | affected |
Weaknesses
- CWE-19: Data Handling
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.