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CVE-2021-38703

HIGH
8.8
CVSS Score
Published: September 1, 2021 at 11:15 AM UTC
Updated: June 17, 2026 at 04:02 AM UTC
2 products affected across 1 vendorExperia WIFI FirmwareExperia Wifi

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Severity
HIGH8.8
Exploit prediction
EPSS 4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Experia WIFI Firmware· Kpn
95%
1.00.15
kpn-experia-wifi (same device)
Experia Wifi· Kpndevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://7bits.nl/journal/posts/cve-2021-38703-kpn-experia-wifi-root-shell/
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.kpnwebshop.com/modems-routers/producten/experia-wifi/2

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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