CVE-2023-27826: SeowonIntech SWC 5100W WIMAX Bootloader 1.18.19.0, HW 0.0.7.0, and FW 1.11.0.1, 1.9.9.4 are vulnerable to OS C

This week

HIGH 8.8MITIGATE

CVE-2023-27826 is a high-severity flaw (CVSS 8.8) affecting swc-5100w firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SeowonIntech SWC 5100W WIMAX Bootloader 1.18.19.0, HW 0.0.7.0, and FW 1.11.0.1, 1.9.9.4 are vulnerable to OS Command Injection. which allows attackers to take over the system with root privilege by abusing doSystem() function.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	11.8% (top 4%)
CISA exploited list	No
Weakness	CWE-78
Published	2023-04-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: seowonintech

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

Am I affected?

Timeline

2023-04-12 13:15 UTCPublished CVE record published
2026-06-17 05:45 UTCUpdated Record last modified

seowonintech swc-5100w firmware MITIGATE

Affected: 1.9.9.4 · 1.11.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9.9.4

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: WIMAX SWC-5100W Firmware V(1.11.0.1 :1.9.9.4) - Authenticated RCE

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-2023-27826?

swc-5100w firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-27826 being exploited?

CVE-2023-27826 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-2023-27826 affect?

CVE-2023-27826 affects swc-5100w firmware. Severity is high (CVSS 8.8). SeowonIntech SWC 5100W WIMAX Bootloader 1.18.19.0, HW 0.0.7.0, and FW 1.11.0.1, 1.9.9.4 are vulnerable to OS Command Injection. which allows attackers to take over the system with root privilege by abusing doSystem() function.

How urgent is CVE-2023-27826?

Priority 60/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference

References

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