CVE-2025-29229: linksys E5600 V1.1.0.26 is vulnerable to command injection in the function ddnsStatus.

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2025-29229 is a critical-severity flaw (CVSS 9.8) affecting e5600 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

linksys E5600 V1.1.0.26 is vulnerable to command injection in the function ddnsStatus.

Why this priority

Critical severity
CISA SSVC: public proof of concept
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-77
Published	2025-12-23
Last modified	2026-10-26

Publisher (CNA): MITRE · Vendor: linksys

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

Am I affected?

Timeline

2025-12-23 17:15 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

linksys e5600 firmware MITIGATE

Affected: 1.1.0.26

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.0.26

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora ELN · openbao · FIXED · 2.6.5-1.eln159 · FEDORA-2026-77adf886ae · source

sudo dnf upgrade --advisory=FEDORA-2026-77adf886ae

Fedora 46 · sugar-turtleart · FIXED · 220-16.fc46 · FEDORA-2026-b79483c788 · source

sudo dnf upgrade --advisory=FEDORA-2026-b79483c788

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-2025-29229?

e5600 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-29229 being exploited?

CVE-2025-29229 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-2025-29229 affect?

CVE-2025-29229 affects e5600 firmware. Severity is critical (CVSS 9.8). linksys E5600 V1.1.0.26 is vulnerable to command injection in the function ddnsStatus.

How urgent is CVE-2025-29229?

Priority 63/100. Critical severity; CISA SSVC: public proof of concept; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

← Back to latest CVEs