CVE-2025-9482
Published: 26 August 2025
Summary
CVE-2025-9482 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Linksys Re6250 Firmware. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 28.2% 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 SI-16 (Memory Protection).
Deeper analysis
CVE-2025-9482 is a stack-based buffer overflow vulnerability affecting the portRangeForwardAdd function in the /goform/portRangeForwardAdd file of Linksys Wi-Fi range extenders, specifically the RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 models running firmware versions 1.0.013.001, 1.0.04.001, 1.0.04.002, 1.1.05.003, or 1.2.07.001. The issue arises from manipulation of the ruleName, schedule, inboundFilter, TCPPorts, or UDPPorts arguments and is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow). It has a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity.
The vulnerability can be exploited remotely by an attacker with low privileges (PR:L), requiring no user interaction and low attack complexity. Successful exploitation allows arbitrary code execution with high impacts on confidentiality, integrity, and availability, potentially leading to full device compromise, such as unauthorized access to the extender's configuration or network traffic manipulation.
No official patches or mitigations are available, as the vendor was contacted early about the disclosure but did not respond. Advisories from VulDB and a public GitHub repository detail the vulnerability and include a proof-of-concept exploit, highlighting the risk of immediate exploitation.
The exploit is public, with a POC available on GitHub, increasing the likelihood of widespread abuse against unpatched devices. No real-world exploitation in the wild has been reported as of the CVE publication on 2025-08-26.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-25793
Vulnerability details
A vulnerability was detected in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. This impacts the function portRangeForwardAdd of the file /goform/portRangeForwardAdd. The manipulation of the argument ruleName/schedule/inboundFilter/TCPPorts/UDPPorts results in stack-based buffer overflow. The attack can be executed remotely.…
more
The exploit is now 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?
Stack-based buffer overflow in the public-facing web management interface (/goform/portRangeForwardAdd) via remote manipulation of parameters enables exploitation of a public-facing application.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Validates user-supplied inputs to the portRangeForwardAdd function, such as ruleName, schedule, TCPPorts, and UDPPorts, preventing stack-based buffer overflows from improper data manipulation.
Implements memory protections like stack canaries, ASLR, and non-executable stacks to mitigate exploitation of the stack-based buffer overflow for arbitrary code execution.
Enforces restrictions on input lengths and types for arguments like ruleName and TCPPorts, reducing the risk of buffer overflows in the vulnerable /goform/portRangeForwardAdd endpoint.