CVE-2021-0248 NFX Series: Hard-coded credentials allow an attacker to take control of any instance through administrative interfaces.
Hard-coded credentials in Juniper NFX Series devices allow attackers to take control via administrative interfaces.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-0248?
CVE-2021-0248 is a critical vulnerability in Juniper Junos, published on 22 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This issue is not applicable to NFX NextGen Software. On NFX Series devices the use of Hard-coded Credentials in Juniper Networks Junos OS allows an attacker to take over any instance of an NFX deployment. This issue is only exploitable through administrative interfaces. This issue affects: Juniper Networks Junos OS versions prior to 19.1R1 on NFX Series. No other platforms besides NFX Series devices are affected.
Weakness: CWE-798
Which versions are affected by CVE-2021-0248?
It affects 1 product.
Products include Juniper Junos.
How do I fix CVE-2021-0248?
No fix has been published for CVE-2021-0248 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-0248 being exploited?
There is no known exploitation of CVE-2021-0248 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos
- CVE-2023-36845 Juniper Junos OS EX Series and SRX Series PHP External Variable Modification
- CVE-2020-1631 Juniper Junos OS Path Traversal
- CVE-2025-21590 Juniper Junos OS Improper Isolation or Compartmentalization
- CVE-2023-36851 Juniper Junos OS SRX Series Missing Authentication for Critical Function
- CVE-2023-36844 Juniper Junos OS EX Series PHP External Variable Modification
Sources
Also known as GHSA-466r-grw5-cc98.