VulnerabilityModified
CVE-2021-38703
An authenticated remote attacker could leverage this to alter the device configuration and achieve remote code execution.
HIGH 8.8EPSS 4.32%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.32% probability · 91th percentile
- CISA KEV
- Not listed
- Affected
- kpn/experia wifi firmware
- Source
- cve@mitre.org
References
- https://7bits.nl/journal/posts/cve-2021-38703-kpn-experia-wifi-root-shell/Exploit, Third Party Advisory
- https://www.kpnwebshop.com/modems-routers/producten/experia-wifi/2Vendor Advisory
- https://7bits.nl/journal/posts/cve-2021-38703-kpn-experia-wifi-root-shell/Exploit, Third Party Advisory
- https://www.kpnwebshop.com/modems-routers/producten/experia-wifi/2Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.