CVE-2021-3297 Auth bypass in n/a
Attackers can gain administrator access on Zyxel NBG2105 routers by setting a specific login cookie value.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-3297?
CVE-2021-3297 is a high-severity authentication bypass vulnerability in n/a, published on 26 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
On Zyxel NBG2105 V1.00(AAGU.2)C0 devices, setting the login cookie to 1 provides administrator access.
Weakness: CWE-287
Which versions are affected by CVE-2021-3297?
It affects 1 product.
Products include Zyxel Nbg2105 Firmware.
How do I fix CVE-2021-3297?
No fix has been published for CVE-2021-3297 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-3297 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-3297 exists.
Public exploit code: 1 Nuclei template.
Sources
Also known as GHSA-vqr2-c24p-rh7p.