Observable discrepancy in Zyxel GS1200 series firmware
Priority LOW 27CWE-203Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-203.
Summary
An improper control of interaction frequency vulnerability in Zyxel GS1200 series switches could allow a local attacker to guess the password by using a timing side-channel attack.
Why it matters now
EPSS 0.00234 14th 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 |
|---|---|---|---|---|---|
| Zyxel | Zyxel GS1200 series firmware | 2.00 Patch 1 | — | No fix listed | CNA |
- Zyxel GS1200 series firmware VendorZyxel Affected 2.00 Patch 1 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:zyxel:gs1200-5_firmware:*:*:*:*:*:*:*:* | before 2.00\(abkm.1\) | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:gs1200-5:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:gs1200-5hp_firmware:*:*:*:*:*:*:*:* | before 2.00\(abkn.1\) | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:gs1200-5hp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:gs1200-8_firmware:*:*:*:*:*:*:*:* | before 2.00\(abme.1\) | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:gs1200-8:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
| cpe:2.3:o:zyxel:gs1200-8hp_firmware:*:*:*:*:*:*:*:* | before 2.00\(abmf.1\) | Vulnerable | Zyxel |
| cpe:2.3:h:zyxel:gs1200-8hp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Zyxel |
- cpe:2.3:o:zyxel:gs1200-5_firmware:*:*:*:*:*:*:*:* Versions before 2.00\(abkm.1\) Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:gs1200-5:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:gs1200-5hp_firmware:*:*:*:*:*:*:*:* Versions before 2.00\(abkn.1\) Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:gs1200-5hp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:gs1200-8_firmware:*:*:*:*:*:*:*:* Versions before 2.00\(abme.1\) Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:gs1200-8:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
- cpe:2.3:o:zyxel:gs1200-8hp_firmware:*:*:*:*:*:*:*:* Versions before 2.00\(abmf.1\) Vulnerable ·Zyxel
- cpe:2.3:h:zyxel:gs1200-8hp:-:*:*:*:*:*:*:* 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-2022-0823
- 2026-10-03 Alias added: GHSA-qvxh-3pw2-32v5
References
Sources
- CVE-2022-0823 · CVE Program
- CVE-2022-0823 · NVD
- FIRST EPSS
- GHSA-qvxh-3pw2-32v5 · 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