70mai M300 Telnet Service demo.sh denial of service

published 2025-06-23 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-18958

cvss: 4.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

A vulnerability was found in 70mai M300 up to 20250611. It has been classified as problematic. This affects an unknown part of the file demo.sh of the component Telnet Service. The manipulation leads to denial of service. Access to the local network is required for this attack. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 16 mo ago (2025-06-24)

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/geo-chen/70mai/blob/main/README.md#finding-8-remotely-crashing-the-dashcam referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.9	CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
CNA	3.1	4.8	CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:W/RC:R
CNA	3.0	4.8	CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:W/RC:R
CNA	2.0	4.3	AV:A/AC:H/Au:S/C:N/I:N/A:C/E:POC/RL:W/RC:UR
CNA	4.0	5.0	CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	4.8	CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	4.8	CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA	2.0	4.3	AV:A/AC:H/Au:S/C:N/I:N/A:C

Affected products

70mai M300

Classification

Weakness

CWE-404 Improper Resource Shutdown or Release

References

github.com /geo-chen/70mai/blob/main/README.md#finding-8-remotely-crashing-the-dashcam
exploit, third-party-advisory
vuldb.com /?id.313647
vdb-entry, third-party-advisory
vuldb.com /?ctiid.313647
signature, permissions-required, vdb-entry
vuldb.com /?submit.595451
third-party-advisory, vdb-entry

Sources

CVE List CVE-2025-6530
NVD CVE-2025-6530

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary