CVE-2026-49198: Improper access control in the MQTT broker allows wildcard topic subscriptions, exposing all MQTT traffic to u

Q: How do I fix CVE-2026-49198?

predator connect w6x firmware: upgrade to newer than w6x_gbl_2.00.000005. Exact commands for each OS are on this page.

Q: Is CVE-2026-49198 being exploited?

CVE-2026-49198 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-49198 affect?

CVE-2026-49198 affects predator connect w6x firmware. Severity is medium (CVSS 4.9). Improper access control in the MQTT broker allows wildcard topic subscriptions, exposing all MQTT traffic to unauthorized actors.

Q: How urgent is CVE-2026-49198?

Priority 20/100. No elevated risk signals yet.

Routine

MEDIUM 4.9UPGRADE

CVE-2026-49198 is a medium-severity flaw (CVSS 4.9) affecting predator connect w6x firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper access control in the MQTT broker allows wildcard topic subscriptions, exposing all MQTT traffic to unauthorized actors.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-05-29
Last modified	2026-07-21

Publisher (CNA): Acer · Vendor: acer

Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-29 09:16 UTCPublished CVE record published
2026-07-21 12:10 UTCUpdated Record last modified

acer predator connect w6x firmware UPGRADE

Affected: <= w6x_gbl_2.00.000005

Fixed in: newer than w6x_gbl_2.00.000005

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-49198?

predator connect w6x firmware: upgrade to newer than w6x_gbl_2.00.000005. Exact commands for each OS are on this page.

Is CVE-2026-49198 being exploited?

CVE-2026-49198 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-49198 affect?

CVE-2026-49198 affects predator connect w6x firmware. Severity is medium (CVSS 4.9). Improper access control in the MQTT broker allows wildcard topic subscriptions, exposing all MQTT traffic to unauthorized actors.

How urgent is CVE-2026-49198?

Priority 20/100. No elevated risk signals yet.

Related CVEs

CVE-2026-49199 CRITICAL 9.8 UPGRADE Crafted MQTT messages can trigger command injection, resulting in root-level code execution on the target devi
CVE-2026-49197 CRITICAL 9.8 UPGRADE Web endpoints intended for the Acer Connect app improperly validate the HTTP Authorization header, failing to
CVE-2026-49195 HIGH 8.8 UPGRADE Unauthenticated Debug Service
CVE-2026-49196 HIGH 7.2 UPGRADE The Wi-Fi device blocking feature fails to sanitize MAC address input, allowing injection and execution of arb

References

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