CVE-2026-22550: OS command injection vulnerability exists in ELECOM wireless LAN products

Q: How do I fix CVE-2026-22550?

wrc-x1500gsa-b firmware: upgrade to newer than 1.13; wrc-x1500gs-b firmware: upgrade to newer than 1.13. Exact commands for each OS are on this page.

Q: Is CVE-2026-22550 being exploited?

CVE-2026-22550 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-2026-22550 affect?

CVE-2026-22550 affects wrc-x1500gsa-b firmware, wrc-x1500gs-b firmware. Severity is high (CVSS 8.8). OS command injection vulnerability exists in ELECOM wireless LAN products. A crafted request from a logged-in user may lead to an arbitrary OS command execution.

This month

HIGH 8.8UPGRADEUPGRADE

CVE-2026-22550 is a high-severity flaw (CVSS 8.8) affecting wrc-x1500gsa-b firmware, wrc-x1500gs-b firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OS command injection vulnerability exists in ELECOM wireless LAN products. A crafted request from a logged-in user may lead to an arbitrary OS command execution.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-02-03
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: elecom

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

Am I affected?

Timeline

2026-02-03 07:16 UTCPublished CVE record published
2026-06-17 10:20 UTCUpdated Record last modified

elecom wrc-x1500gsa-b firmware UPGRADE

Affected: <= 1.13

Fixed in: newer than 1.13

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.

elecom wrc-x1500gs-b firmware UPGRADE

Affected: <= 1.13

Fixed in: newer than 1.13

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-2026-22550?

wrc-x1500gsa-b firmware: upgrade to newer than 1.13; wrc-x1500gs-b firmware: upgrade to newer than 1.13. Exact commands for each OS are on this page.

Is CVE-2026-22550 being exploited?

CVE-2026-22550 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-2026-22550 affect?

CVE-2026-22550 affects wrc-x1500gsa-b firmware, wrc-x1500gs-b firmware. Severity is high (CVSS 8.8). OS command injection vulnerability exists in ELECOM wireless LAN products. A crafted request from a logged-in user may lead to an arbitrary OS command execution.

How urgent is CVE-2026-22550?

Priority 51/100. High severity

Related CVEs

CVE-2026-24465 CRITICAL 9.8 MITIGATE MITIGATE Stack-based buffer overflow vulnerability exists in ELECOM wireless LAN access point devices
CVE-2026-24449 MEDIUM 4.6 MITIGATE MITIGATE For WRC-X1500GS-B and WRC-X1500GSA-B, the initial passwords can be calculated easily from the system informati
CVE-2024-40883 HIGH 8.8 UPGRADE UPGRADE Cross-site request forgery vulnerability exists in ELECOM wireless LAN routers

References

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