CVE-2022-20728
A vulnerability in the client forwarding code of multiple Cisco Access Points (APs) could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device.
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
Description
A vulnerability in the client forwarding code of multiple Cisco Access Points (APs) could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device. This vulnerability is due to a logic error on the AP that forwards packets that are destined to a wireless client if they are received on the native VLAN. An attacker could exploit this vulnerability by obtaining access to the native VLAN and directing traffic directly to the client through their MAC/IP combination. A successful exploit could allow the attacker to bypass VLAN separation and potentially also bypass any Layer 3 protection mechanisms that are deployed.
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- cisco/aironet 1542d firmware · cisco/aironet 1542i firmware · cisco/aironet 1562i firmware · cisco/aironet 1562e firmware · cisco/aironet 1562d firmware · cisco/aironet 1815i firmware · cisco/aironet 1815m firmware · cisco/aironet 1815t firmware · cisco/aironet 1815w firmware · cisco/aironet 1830 firmware · cisco/aironet 1840 firmware · cisco/aironet 1850e firmware · cisco/aironet 1850i firmware · cisco/aironet 2800i firmware · cisco/aironet 2800e firmware · cisco/aironet 3800i firmware · cisco/aironet 3800e firmware · cisco/aironet 3800p firmware · cisco/aironet 4800 firmware · cisco/catalyst 9105ax firmware · +6 more
- Source
- psirt@cisco.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.