CVE-2021-27734 Auth bypass in n/a
Remote attackers can change existing user credentials in Hirschmann HiOS and HiSecOS devices, leading to unauthorized access and privilege escalation.
- 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-2021-27734?
CVE-2021-27734 is a critical authentication bypass vulnerability in n/a, published on 17 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Hirschmann HiOS 07.1.01, 07.1.02, and 08.1.00 through 08.5.xx and HiSecOS 03.3.00 through 03.5.01 allow remote attackers to change the credentials of existing users.
Weakness: CWE-287
Which versions are affected by CVE-2021-27734?
It affects 2 products.
Products include Belden Hirschmann Hios, Belden Hisecos.
How do I fix CVE-2021-27734?
No fix has been published for CVE-2021-27734 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-2021-27734 being exploited?
There is no known exploitation of CVE-2021-27734 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-r6q8-h627-r6p2.