CVE-2025-8828
Published: 11 August 2025
Summary
CVE-2025-8828 is a medium-severity Command Injection (CWE-77) vulnerability in Linksys Re6250 Firmware. Its CVSS base score is 6.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 25.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection in the web-based IPv6 configuration (/goform/setIpv6) on Linksys range extenders enables remote exploitation of a public-facing application (T1190), indirect command execution via unsanitized inputs (T1202), and execution of Unix shell commands (T1059.004) on the likely Linux-based firmware.
NVD Description
A vulnerability was determined in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. Affected is the function ipv6cmd of the file /goform/setIpv6. The manipulation of the argument Ipv6PriDns/Ipv6SecDns/Ipv6StaticGateway/LanIpv6Addr/LanPrefixLen/pppoeUser/pppoePass/pppoeIdleTime/pppoeRedialPeriod/Ipv6in4_PrefixLen/LocalIpv6/RemoteIpv4/LanIPv6_Prefix/LanPrefixLen/ipv6to4Relay/ipv6rdRelay/tunrd_PrefixLen/wan_UseLinkLocal/Ipv6StaticIp/Ipv6PrefixLen leads to os command injection. It is possible to…
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launch the attack 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.
Deeper analysisAI
CVE-2025-8828 is an OS command injection vulnerability affecting Linksys Wi-Fi range extenders models RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 running firmware up to version 20250801. The issue resides in the ipv6cmd function within the /goform/setIpv6 CGI endpoint, where manipulation of IPv6-related parameters such as Ipv6PriDns, Ipv6SecDns, Ipv6StaticGateway, LanIpv6Addr, LanPrefixLen, pppoeUser, pppoePass, pppoeIdleTime, pppoeRedialPeriod, Ipv6in4_PrefixLen, LocalIpv6, RemoteIpv4, LanIPv6_Prefix, ipv6to4Relay, ipv6rdRelay, tunrd_PrefixLen, wan_UseLinkLocal, Ipv6StaticIp, and Ipv6PrefixLen enables arbitrary command execution. It is classified under CWE-77 (Command Injection) and CWE-78 (OS Command Injection), with a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).
The vulnerability can be exploited remotely over the network by an attacker with low privileges, such as an authenticated user, requiring low complexity and no user interaction. Successful exploitation allows injection and execution of arbitrary operating system commands on the device, potentially resulting in limited confidentiality, integrity, and availability impacts, including data leakage, modification of system settings, or denial of service.
Advisories from VulDB (ctiid.319362, id.319362) and a public GitHub disclosure detail the vulnerability and include a proof-of-concept exploit. The vendor was notified early but provided no response or patches as of the CVE publication on 2025-08-11. Security practitioners should review the referenced GitHub POC at https://github.com/wudipjq/my_vuln/blob/main/Linksys1/vuln_44/44.md and advisories for reproduction details, and consider isolating affected devices or upgrading firmware if updates become available.
The exploit has been publicly disclosed and may be actively used by attackers.
Details
- CWE(s)