CVE-2021-27426 GE UR family insecure default variable initialization

Critical 9.8 Published Updated

GE UR IED firmware fails to disable Factory Mode in Basic security variant, allowing unauthorized access to servicing functions.

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-2021-27426?

CVE-2021-27426 is a critical vulnerability in GE UR family, published on 23 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

GE UR IED firmware versions prior to version 8.1x with “Basic” security variant does not allow the disabling of the “Factory Mode,” which is used for servicing the IED by a “Factory” user.

Weakness: CWE-453

Which versions are affected by CVE-2021-27426?

It affects 19 products.

Products include Ge Multilin B30 Firmware, Ge Multilin B90 Firmware, Ge Multilin C30 Firmware, Ge Multilin C60 Firmware, Ge Multilin C70 Firmware, Ge Multilin C95 Firmware and 13 more.

How do I fix CVE-2021-27426?

No fix has been published for CVE-2021-27426 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-27426 being exploited?

There is no known exploitation of CVE-2021-27426 in the wild and no public exploit code.

Sources

Also known as GHSA-qwcv-4jvg-f4mr.

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