CVE-2026-35546: Anviz CX2 Lite and CX7 are vulnerable to unauthenticated firmware uploads

This month

CRITICAL 9.8REMOTEMITIGATEMITIGATE

CVE-2026-35546 is a critical-severity flaw (CVSS 9.8) affecting cx7 firmware, cx2 lite firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Anviz CX2 Lite and CX7 are vulnerable to unauthenticated firmware uploads. This causes crafted archives to be accepted, enabling attackers to plant and execute code and obtain a reverse shell.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-04-17
Last modified	2026-10-26

Publisher (CNA): ICS-CERT · Vendor: anviz

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-17 20:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

anviz cx7 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

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.

anviz cx2 lite firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

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-2026-35546?

cx7 firmware: mitigate or apply the listed mitigation; cx2 lite firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-35546 being exploited?

CVE-2026-35546 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-2026-35546 affect?

CVE-2026-35546 affects cx7 firmware, cx2 lite firmware. Severity is critical (CVSS 9.8). Anviz CX2 Lite and CX7 are vulnerable to unauthenticated firmware uploads. This causes crafted archives to be accepted, enabling attackers to plant and execute code and obtain a reverse shell.

How urgent is CVE-2026-35546?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

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References

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