High severity8.8NVD Advisory· Published Sep 1, 2021· Updated Jun 17, 2026
CVE-2021-38703
CVE-2021-38703
Description
Wireless devices running certain Arcadyan-derived firmware (such as KPN Experia WiFi 1.00.15) do not properly sanitise user input to the syslog configuration form. An authenticated remote attacker could leverage this to alter the device configuration and achieve remote code execution. This can be exploited in conjunction with CVE-2021-20090.
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Affected products
3- KPN/Experia WiFidescription
- Range: 1.00.15
- Range: 1.00.15
Patches
Vulnerability mechanics
References
2- 7bits.nl/journal/posts/cve-2021-38703-kpn-experia-wifi-root-shell/nvdExploitThird Party Advisory
- www.kpnwebshop.com/modems-routers/producten/experia-wifi/2nvdVendor Advisory
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