CVE-2021-26637 SiHAS Improper Authentication vulnerability
Unauthorized users can remotely control SiHAS devices due to missing authentication and permission checks in firmware and apps.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-26637?
CVE-2021-26637 is a high-severity missing authorization vulnerability in Shina System Co.,Ltd SiHAS firmware, published on 22 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
There is no account authentication and permission check logic in the firmware and existing apps of SiHAS's SGW-300, ACM-300, GCM-300, so unauthorized users can remotely control the device.
Which versions are affected by CVE-2021-26637?
It affects 3 products.
Products include Shinasys Sihas Acm-300 Firmware, Shinasys Sihas Gcm-300 Firmware, Shinasys Sihas Sgw-300 Firmware.
How do I fix CVE-2021-26637?
No fix has been published for CVE-2021-26637 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-26637 being exploited?
There is no known exploitation of CVE-2021-26637 in the wild and no public exploit code.
Sources
Also known as GHSA-4j8v-2qmr-6m8p.