ZyXEL ZyWALL/USG series devices have a Bleichenbacher vulnerability in their Internet Key…
Priority LOW 28Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
ZyXEL ZyWALL/USG series devices have a Bleichenbacher vulnerability in their Internet Key Exchange (IKE) handshake implementation used for IPsec based VPN connections.
Why it matters now
EPSS 0.00965 61st 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 · 34
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:zyxel:zywall_110_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:zywall_110:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:zywall_1100_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:zywall_1100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:zywall_310_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:zywall_310:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:zywall_vpn_50_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:zywall_vpn_50:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:zywall_vpn_100_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:zywall_vpn_100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
- cpe:2.3:o:zyxel:zywall_110_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:zywall_110:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:zywall_1100_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:zywall_1100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:zywall_310_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:zywall_310:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:zywall_vpn_50_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:zywall_vpn_50:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:zywall_vpn_100_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:zywall_vpn_100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
Show 24 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:zyxel:zywall_vpn_300_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:zywall_vpn_300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_20w_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_20w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_40_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_40:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_40w_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_40w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_60_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_60:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_60w_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_60w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_110_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_110:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_2200-vpn_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_2200-vpn:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_310_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_310:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_1100_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_1100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_1900_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_1900:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:usg_20w-vpn_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
- cpe:2.3:o:zyxel:zywall_vpn_300_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:zywall_vpn_300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_20w_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_20w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_40_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_40:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_40w_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_40w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_60_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_60:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_60w_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_60w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_110_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_110:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_2200-vpn_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_2200-vpn:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_310_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_310:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_1100_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_1100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_1900_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_1900:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:usg_20w-vpn_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-9129
- 2026-10-03 Alias added: GHSA-rxgc-f7rc-pv6h
References
More Zyxel Usg 1100 Firmware vulnerabilities
- TI-2022-09869 Improper input validation in Zyxel USG/ZyWALL series firmware CVSS 3.1HIGH 7.8
- TI-2022-09870 OS command injection in Zyxel USG/ZyWALL series firmware CVSS 3.1HIGH 7.8
- TI-2022-00646 Cross-site scripting in Zyxel USG/ZyWALL series firmware CVSS 3.1MEDIUM 6.1
- TI-2022-00814 Improper authentication in Zyxel USG/ZyWALL series firmware CVSS 3.1MEDIUM 6.5
Sources
- CVE-2018-9129 · CVE Program
- CVE-2018-9129 · NVD
- FIRST EPSS
- GHSA-rxgc-f7rc-pv6h · 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