Vulnerability · Published Mar 11, 2026 · Assigned by jpcert
CVE-2026-27842
Critical 9.8
In plain English
A critical-severity authentication bypass in MR-GM5A-L1 from Micro Research Ltd.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Severity (CVSS 3.0)9.8Critical
Exploit odds (30 days)0.7%top 46.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Authentication bypass issue exists in MR-GM5L-S1 and MR-GM5A-L1, which may allow an attacker to bypass authentication and change the device configuration.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Micro Research Ltd. | MR-GM5L-S1 | firmware versions prior to v2.01.04N1_02 |
| Micro Research Ltd. | MR-GM5A-L1 | firmware versions prior to v2.01.04N1_02 |
Weakness: CWE-288 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H