CVE-2026-42062: ELECOM wireless LAN access point devices contain an OS command injection in processing of username parameter

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CRITICAL 9.8REMOTE

CVE-2026-42062 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ELECOM wireless LAN access point devices contain an OS command injection in processing of username parameter. If processing a crafted request, an arbitrary OS command may be executed. No authentication is required.

Why this priority

Critical severity
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	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-05-13
Last modified	2026-10-26

Publisher (CNA): JPCERT/CC

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

Timeline

2026-05-13 13:16 UTCPublished CVE record published
2026-10-26 14:10 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · gcl · FIXED · 2.7.1-12.fc46 · FEDORA-2026-ff383a759b · source

sudo dnf upgrade --advisory=FEDORA-2026-ff383a759b

Fedora ELN · mozjs140 · FIXED · 140.13.0-5.eln159 · FEDORA-2026-f7ed0026e0 · source

sudo dnf upgrade --advisory=FEDORA-2026-f7ed0026e0

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-2026-42062?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-42062 being exploited?

CVE-2026-42062 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-2026-42062 affect?

CVE-2026-42062 affects affected software. Severity is critical (CVSS 9.8). ELECOM wireless LAN access point devices contain an OS command injection in processing of username parameter. If processing a crafted request, an arbitrary OS command may be executed. No authentication is required.

How urgent is CVE-2026-42062?

Priority 61/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

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