9.8

CVE-2026-49191: acer connect_m6e_5g_firmware Improper Authentication

CVSS: 9.8v3.1CriticalAnalyzed
Published 04-06-2026Last modified 04-06-2026
Open JSON

Vulnerability summary

CVE-2026-49191 is a critical (CVSS 9.8) Improper Authentication vulnerability in acer connect_m6e_5g_firmware. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
0.53%
0%100%
Low · +0.23 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 04-06-2026
    PublishedVulnerability first disclosed.
  2. 04-06-2026
    Last modifiedVulnerability information updated.

Description

The production build of the M3WebServer hard-codes its backend API keys, which can be easily intercepted through verbose error handling pages.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

+0.23 pp

From 0.29% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.53%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Acer2 products

1 vendor · 2 products

References

1 links