CVE-2021-3297

Public Exploit

Description

On Zyxel NBG2105 V1.00(AAGU.2)C0 devices, setting the login cookie to 1 provides administrator access.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 80.02% Top 5%
Vendor Advisory zyxel.com Vendor Advisory zyxel.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.zyxel.com/us/en/support/security_advisories.shtml vendor advisory
https://www.zyxel.com/support/SupportLandingSR.shtml?c=gb&l=en&kbid=M-01490&md=NBG2105 product vendor advisory
https://github.com/nieldk/vulnerabilities/blob/main/zyxel%20nbg2105/Admin%20bypass third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-3297?
CVE-2021-3297 has been scored as a high severity vulnerability.
How to fix CVE-2021-3297?
To fix CVE-2021-3297, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3297 being actively exploited in the wild?
It is possible that CVE-2021-3297 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~80% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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