Cisco Access Points VLAN Bypass from Native VLAN Vulnerability
Priority LOW 21CWE-284Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00267 18th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Aironet Access Point Software (IOS XE Controller) | all versions | — | No fix listed | CNA |
- Cisco Aironet Access Point Software (IOS XE Controller) VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 52
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:aironet_1542d_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1542d:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1542i_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1542i:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1562i_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1562i:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1562e_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1562e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1562d_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1562d:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:aironet_1542d_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1542d:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1542i_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1542i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1562i_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1562i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1562e_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1562e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1562d_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1562d:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 42 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:aironet_1815i_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1815i:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1815m_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1815m:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1815t_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1815t:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1815w_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1815w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1830_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1830:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1840_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1840:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1850e_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1850e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_1850i_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_1850i:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_2800i_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_2800i:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_2800e_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_2800e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_3800i_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_3800i:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_3800e_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_3800e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_3800p_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_3800p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:aironet_4800_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:aironet_4800:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:catalyst_9105ax_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:catalyst_9105ax:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:catalyst_9115ax_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:catalyst_9115ax:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:catalyst_9117ax_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:catalyst_9117ax:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:catalyst_9120ax_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:catalyst_9120ax:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:catalyst_9124ax_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:catalyst_9124ax:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:catalyst_9130ax_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:catalyst_9130ax:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:catalyst_iw6300_firmware:017.006\(001\):*:*:*:*:*:*:* | 017.006(001) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:catalyst_iw6300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:aironet_1815i_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1815i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1815m_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1815m:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1815t_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1815t:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1815w_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1815w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1830_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1830:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1840_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1840:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1850e_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1850e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_1850i_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_1850i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_2800i_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_2800i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_2800e_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_2800e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_3800i_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_3800i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_3800e_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_3800e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_3800p_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_3800p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:aironet_4800_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:aironet_4800:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:catalyst_9105ax_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:catalyst_9105ax:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:catalyst_9115ax_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:catalyst_9115ax:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:catalyst_9117ax_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:catalyst_9117ax:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:catalyst_9120ax_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:catalyst_9120ax:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:catalyst_9124ax_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:catalyst_9124ax:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:catalyst_9130ax_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:catalyst_9130ax:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:catalyst_iw6300_firmware:017.006\(001\):*:*:*:*:*:*:* Versions 017.006(001) Vulnerable ·Cisco
- cpe:2.3:h:cisco:catalyst_iw6300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-20728
- 2026-10-03 Alias added: GHSA-66v9-vq83-62h5
References
More Cisco Aironet 1542d Firmware vulnerabilities
- TI-2021-01146 Cisco Access Points SSH Management Privilege Escalation Vulnerability CVSS 3.1HIGH 7.8
- TI-2020-15977 An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. CVSS 3.1MEDIUM 6.5
- TI-2020-15976 An issue was discovered in the kernel in NetBSD 7.1. CVSS 3.1MEDIUM 5.3
- TI-2020-02821 Cisco Mobility Express Software Cross-Site Request Forgery Vulnerability CVSS 3.1MEDIUM 6.5
- TI-2020-02820 Cisco Aironet Series Access Points Client Packet Processing Denial of Service Vulnerability CVSS 3.1MEDIUM 6.5
- TI-2020-15068 The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired… CVSS 3.1LOW 3.5
Sources
- CVE-2022-20728 · CVE Program
- CVE-2022-20728 · NVD
- FIRST EPSS
- GHSA-66v9-vq83-62h5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences