PT-2026-24580 · Micro Research · Mr-Gm5A-L1+1

Chuya Hayakawa · Published 2026-03-11 · Updated 2026-05-11 · CVE-2026-27842

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions MR-GM5L-S1 MR-GM5A-L1

Description An 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Authentication Bypass Using an Alternate Path or Channel

Weakness Enumeration

CWE-288

Related Identifiers

CVE-2026-27842

Affected Products

Mr-Gm5A-L1

Mr-Gm5L-S1

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-27842 · Security Note
• https://twitter.com/CveFindCom/status/2031621488940392841 · Twitter Post
• https://mrl.co.jp/download/security/JVNVU98103854.pdf · Note
• https://twitter.com/CVEnew/status/2033194328714338598 · Twitter Post
• https://jvn.jp/en/vu/JVNVU98103854 · Note
• https://t.me/CVEtracker/47095 · Telegram Post
• https://twitter.com/lyrie_ai/status/2053725716919853207 · Twitter Post
• https://twitter.com/TheHackerWire/status/2031795504812814780 · Twitter Post