CVE-2026-4163
CVE-2026-4163 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- CVSS v4: 8.9
- EPSS exploit prediction: 2% (79th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-12192
- Weakness: CWE-74
- Published:
- Last modified:
Description
A vulnerability was detected in Wavlink WL-WN579A3 220323. This issue affects the function SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Performing a manipulation results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading the affected component is recommended.
Frequently asked questions
- What is CVE-2026-4163?
- A vulnerability was detected in Wavlink WL-WN579A3 220323. This issue affects the function SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Performing a manipulation results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading the affected component is recommended.
- How severe is CVE-2026-4163?
- CVE-2026-4163 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-4163 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-4163?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-4163 have an EU (EUVD) identifier?
- Yes. CVE-2026-4163 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12192.
- When was CVE-2026-4163 published?
- CVE-2026-4163 was published on 2026-03-16 and last updated on 2026-06-17.
References
- https://dl.wavlink.com/firmware/RD/WINSTAR_WN579A3-A-2026-03-10-94f93d4-WO-mt7628-squashfs-sysupgrade.bin
- https://github.com/Litengzheng/vul_db/blob/main/WL-WN579A3/vul_10/README.md
- https://github.com/Litengzheng/vul_db/blob/main/WL-WN579A3/vul_9/README.md
- https://vuldb.com/?ctiid.351070
- https://vuldb.com/?id.351070
- https://vuldb.com/?submit.765327
- https://vuldb.com/?submit.765328
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