CVE-2025-8823
Published: 11 August 2025
Summary
CVE-2025-8823 is a low-severity Command Injection (CWE-77) vulnerability in Linksys Re6250 Firmware. Its CVSS base score is 2.1 (Low).
Operationally, exploitation aligns with the MITRE ATT&CK technique Network Device CLI (T1059.008); ranked in the top 11.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and AC-6 (Least Privilege).
Deeper analysis
A vulnerability identified as CVE-2025-8823 affects the Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 wireless range extenders up to firmware version 20250801. It resides in the setDeviceName function within the /goform/setDeviceName endpoint, where improper handling of the DeviceName argument permits OS command injection, corresponding to CWE-77 and CWE-78.
An authenticated remote attacker with low privileges can supply a crafted DeviceName value to execute arbitrary operating system commands on the device. The CVSS 4.0 score of 2.1 reflects limited impact on confidentiality, integrity, and availability, with the attack vector being network-accessible and requiring no user interaction.
Public references, including detailed reports and a proof-of-concept on GitHub along with Vuldb entries, indicate that the vendor was notified prior to disclosure but provided no response or patch. No official mitigation guidance or firmware updates are available from the vendor.
The exploit has been made public and carries an EPSS score of 0.0415 with no material change from its peak value.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-24103
Vulnerability details
A vulnerability was found in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. Affected by this vulnerability is the function setDeviceName of the file /goform/setDeviceName. The manipulation of the argument DeviceName leads to os command injection. The…
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attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection via remote web form (/goform/setDeviceName) on public-facing Linksys range extender enables exploitation of public-facing application (T1190), indirect command execution (T1202), and network device CLI abuse (T1059.008).
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires validation and sanitization of the DeviceName input parameter to block OS command injection via /goform/setDeviceName.
Restricts the privileges of the web interface process so that injected commands cannot perform arbitrary OS actions on the extender.
Limits the device to only essential network functions, reducing the attack surface that allows remote command execution through setDeviceName.