by Kastro
Paper/Archive/CVE-2026-27842

CVE-2026-27842

Micro Research Ltd. MR-GM5L-S1 — Authentication bypass issue exists in MR-GM5L-S1 and MR-GM5A-L1, which may allow an attacker to bypass authentication and change the devi…

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 51.4.514 × 2010.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
MR-GM5L-S1firmware versions prior to v2.01.04N1_02–CNA
MR-GM5A-L1firmware versions prior to v2.01.04N1_02–CNA

Scores by source

jpcert (CNA)9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
jpcert (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refmrl.co.jp/download/security/JVNVU98103854.pdfrefjvn.jp/en/vu/JVNVU98103854