A partial authentication bypass vulnerability exists on Realtek RTL8812AR 1.21WW…
Priority LOW 26CWE-290Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-290.
Summary
A partial authentication bypass vulnerability exists on Realtek RTL8812AR 1.21WW, RTL8196D 1.0.0, RTL8192ER 2.10, and RTL8881AN 1.09 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.
Why it matters now
EPSS 0.00751 55th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:realtek:rtl8812ar_firmware:1.21ww:*:*:*:*:*:*:* | 1.21ww | Vulnerable | Realtek |
| cpe:2.3:h:realtek:rtl8812ar:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Realtek |
| cpe:2.3:o:realtek:rtl8196d_firmware:1.0.0:*:*:*:*:*:*:* | 1.0.0 | Vulnerable | Realtek |
| cpe:2.3:h:realtek:rtl8196d:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Realtek |
| cpe:2.3:o:realtek:rtl8192er_firmware:2.10:*:*:*:*:*:*:* | 2.10 | Vulnerable | Realtek |
| cpe:2.3:h:realtek:rtl8192er:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Realtek |
| cpe:2.3:o:realtek:rtl8881an_firmware:1.09:*:*:*:*:*:*:* | 1.09 | Vulnerable | Realtek |
| cpe:2.3:h:realtek:rtl8881an:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Realtek |
- cpe:2.3:o:realtek:rtl8812ar_firmware:1.21ww:*:*:*:*:*:*:* Versions 1.21ww Vulnerable ·Realtek
- cpe:2.3:h:realtek:rtl8812ar:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Realtek
- cpe:2.3:o:realtek:rtl8196d_firmware:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·Realtek
- cpe:2.3:h:realtek:rtl8196d:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Realtek
- cpe:2.3:o:realtek:rtl8192er_firmware:2.10:*:*:*:*:*:*:* Versions 2.10 Vulnerable ·Realtek
- cpe:2.3:h:realtek:rtl8192er:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Realtek
- cpe:2.3:o:realtek:rtl8881an_firmware:1.09:*:*:*:*:*:*:* Versions 1.09 Vulnerable ·Realtek
- cpe:2.3:h:realtek:rtl8881an:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Realtek
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-18990
- 2026-10-03 Alias added: GHSA-3wr3-v78q-x45g
References
Sources
- CVE-2019-18990 · CVE Program
- CVE-2019-18990 · NVD
- FIRST EPSS
- GHSA-3wr3-v78q-x45g · 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