CVE-2026-29521: Hereta ETH-IMC408M firmware version 1.0.15 and prior contain a cross-site request forgery vulnerability that a

Q: How do I fix CVE-2026-29521?

eth-imc408m firmware: upgrade to newer than 1.0.15. Exact commands for each OS are on this page.

Q: Is CVE-2026-29521 being exploited?

CVE-2026-29521 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-2026-29521 affect?

CVE-2026-29521 affects eth-imc408m firmware. Severity is medium (CVSS 4.3). Hereta ETH-IMC408M firmware version 1.0.15 and prior contain a cross-site request forgery vulnerability that allows attackers to modify device configuration by exploiting missing CSRF protections in setup.cgi. Attackers can host malicious p

Q: How urgent is CVE-2026-29521?

Priority 15/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2026-29521 is a medium-severity flaw (CVSS 4.3) affecting eth-imc408m firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Hereta ETH-IMC408M firmware version 1.0.15 and prior contain a cross-site request forgery vulnerability that allows attackers to modify device configuration by exploiting missing CSRF protections in setup.cgi. Attackers can host malicious pages that submit forged requests using automatically-included HTTP Basic Authentication credentials to add RADIUS accounts, alter network settings, or trigger diagnostics.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-352
Published	2026-03-16
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: hereta

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-16 18:16 UTCPublished CVE record published
2026-06-17 10:29 UTCUpdated Record last modified

hereta eth-imc408m firmware UPGRADE

Affected: <= 1.0.15

Fixed in: newer than 1.0.15

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-2026-29521?

eth-imc408m firmware: upgrade to newer than 1.0.15. Exact commands for each OS are on this page.

Is CVE-2026-29521 being exploited?

CVE-2026-29521 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-2026-29521 affect?

CVE-2026-29521 affects eth-imc408m firmware. Severity is medium (CVSS 4.3). Hereta ETH-IMC408M firmware version 1.0.15 and prior contain a cross-site request forgery vulnerability that allows attackers to modify device configuration by exploiting missing CSRF protections in setup.cgi. Attackers can host malicious p

How urgent is CVE-2026-29521?

Priority 15/100. No elevated risk signals yet.

Related CVEs

CVE-2026-29520 MEDIUM 6.1 UPGRADE Hereta ETH-IMC408M firmware version 1.0.15 and prior contain a reflected cross-site scripting vulnerability in
CVE-2026-29513 MEDIUM 5.4 UPGRADE Hereta ETH-IMC408M firmware version 1.0.15 and prior contain a stored cross-site scripting vulnerability that
CVE-2026-29510 MEDIUM 5.4 UPGRADE Hereta ETH-IMC408M firmware version 1.0.15 and prior contain a stored cross-site scripting vulnerability that

References

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