How severe is CVE-2026-49186?

CVE-2026-49186 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-49186 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-49186?

CVE-2026-49186 affects Acer Connect M6e 5g Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-49186?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-49186 have an EU (EUVD) identifier?

Yes. CVE-2026-49186 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34200.

When was CVE-2026-49186 published?

CVE-2026-49186 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-49186

CVE-2026-49186 is a critical-severity vulnerability in Acer Connect M6e 5g Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.6
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34200
Weakness: CWE-287
Affected product: Acer Connect M6e 5g Firmware
Published: 2026-06-04
Last modified: 2026-06-17

Description

The local MQTT broker does not enforce topic-level Access Control Lists (ACLs). This allows any client to subscribe using wildcard characters (# or +) to enumerate hidden network devices or publish rogue control commands.

Frequently asked questions

What is CVE-2026-49186?: The local MQTT broker does not enforce topic-level Access Control Lists (ACLs). This allows any client to subscribe using wildcard characters (# or +) to enumerate hidden network devices or publish rogue control commands.
How severe is CVE-2026-49186?: CVE-2026-49186 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-49186 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-49186?: CVE-2026-49186 affects Acer Connect M6e 5g Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-49186?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-49186 have an EU (EUVD) identifier?: Yes. CVE-2026-49186 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34200.
When was CVE-2026-49186 published?: CVE-2026-49186 was published on 2026-06-04 and last updated on 2026-06-17.

References

https://community.acer.com/en/kb/articles/19707

Affected products (1)

cpe:2.3:o:acer:connect_m6e_5g_firmware:*:*:*:*:*:*:*:*

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