CVE-2021-3297
7.8 HIGHOn Zyxel NBG2105 V1.00(AAGU.2)C0 devices, setting the login cookie to 1 provides administrator access
Published: 2021-01-26 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 7.8 HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-287
Affected products
| Vendor | Product |
|---|---|
| zyxel | nbg2105_firmware |
Description
On Zyxel NBG2105 V1.00(AAGU.2)C0 devices, setting the login cookie to 1 provides administrator access.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-3297
- [Other]https://codeberg.org/nieldk/vulnerabilities/src/branch/main/zyxel%20nbg2105/Admin%20bypass
- [Exploit reference]https://github.com/nieldk/vulnerabilities/blob/main/zyxel%20nbg2105/Admin%20bypass
- [Vendor advisory]https://www.zyxel.com/support/SupportLandingSR.shtml?c=gb&l=en&kbid=M-01490&md=NBG2105
- [Vendor advisory]https://www.zyxel.com/us/en/support/security_advisories.shtml
- [Exploit reference]https://github.com/nieldk/vulnerabilities/blob/main/zyxel%20nbg2105/Admin%20bypass
- [Vendor advisory]https://www.zyxel.com/support/SupportLandingSR.shtml?c=gb&l=en&kbid=M-01490&md=NBG2105
- [Vendor advisory]https://www.zyxel.com/us/en/support/security_advisories.shtml
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