Vulnerability Details : CVE-2021-38703
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.
Vulnerability category: Input validationExecute code
Products affected by CVE-2021-38703
- cpe:2.3:o:kpn:experia_wifi_firmware:1.00.15:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-38703
0.39%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 73 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-38703
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.0
|
HIGH | AV:N/AC:L/Au:S/C:C/I:C/A:C |
8.0
|
10.0
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-38703
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-38703
-
https://7bits.nl/journal/posts/cve-2021-38703-kpn-experia-wifi-root-shell/
Getting a root shell on an old KPN Experia Wifi (CVE-2021-38703) | Habbie's journalExploit;Third Party Advisory
-
https://www.kpnwebshop.com/modems-routers/producten/experia-wifi/2
Experia WiFi - KPN WebshopVendor Advisory
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