CVE-2021-22771 Code injection in Easergy T300 with firmware V2.7.1 and older
An attacker can execute arbitrary commands via CSV formula injection in Easergy T300 devices, posing a risk to industrial control systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-22771?
CVE-2021-22771 is a high-severity code injection vulnerability in Easergy T300 with firmware V2.7.1 and older, published on 21 Jul 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A CWE-1236: Improper Neutralization of Formula Elements in a CSV File vulnerability exists in Easergy T300 with firmware V2.7.1 and older that would allow arbitrary command execution.
Weakness: CWE-1236
Which versions are affected by CVE-2021-22771?
It affects 1 product.
Products include Schneider-Electric Easergy T300 Firmware.
How do I fix CVE-2021-22771?
No fix has been published for CVE-2021-22771 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-22771 being exploited?
There is no known exploitation of CVE-2021-22771 in the wild and no public exploit code.
Other vulnerabilities in Easergy T300 with firmware V2.7.1 and older
- CVE-2020-28215 Missing authorization in Easergy T300 (firmware 2.7 and older)
- CVE-2020-7561 Missing authorization in Easergy T300 with firmware 2.7 and older
- CVE-2020-7508 Auth bypass in Easergy T300 (Firmware version 1.5.2 and older)
- CVE-2020-7512 Supply chain in Easergy T300 (Firmware version 1.5.2 and older)
- CVE-2020-7503 Cross-site request forgery in Easergy T300 (Firmware version 1.5.2 and older)
Sources
Also known as GHSA-hfw2-fvxc-ccvp.