CVE-2025-9361
Published: 23 August 2025
Summary
CVE-2025-9361 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 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 35.6% 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Requires validation of inputs like ipRangeBlockRuleName, scheduleIp, and ipRangeBlockRuleIpAddr to prevent stack-based buffer overflows from improper restriction of operations within memory bounds.
Implements memory safeguards such as stack canaries, ASLR, and non-executable memory to protect against exploitation of stack-based buffer overflows even if invalid inputs are processed.
Directly addresses remediation of the identified buffer overflow flaw in the ipRangeBlockManageRule function through timely patching or corrective actions.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in the public-facing web management interface (/goform/ipRangeBlockManageRule) of Linksys range extenders enables remote code execution for initial access, directly mapping to T1190: Exploit Public-Facing Application.
NVD Description
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. The affected element is the function ipRangeBlockManageRule of the file /goform/ipRangeBlockManageRule. Performing manipulation of the argument ipRangeBlockRuleName/scheduleIp/ipRangeBlockRuleIpAddr results in stack-based buffer overflow. The attack may be…
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initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Deeper analysisAI
CVE-2025-9361 is a stack-based buffer overflow vulnerability in the ipRangeBlockManageRule function within the /goform/ipRangeBlockManageRule file of Linksys range extenders, specifically models RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 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 flaw arises from improper handling of the arguments ipRangeBlockRuleName, scheduleIp, and ipRangeBlockRuleIpAddr, as classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow). It carries 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), such as an authenticated user on the network, requiring no user interaction. By manipulating the specified arguments via the affected endpoint, an attacker can trigger the buffer overflow, potentially leading to arbitrary code execution with high impacts on confidentiality, integrity, and availability. A public proof-of-concept exploit is available, increasing the risk of widespread abuse.
Advisories from VulDB note that the vendor was contacted early regarding disclosure but provided no response, and no patches or mitigations are mentioned in the available references. Security practitioners should isolate affected devices, restrict access to the /goform/ipRangeBlockManageRule endpoint, and monitor for exploitation attempts using the public PoC detailed on GitHub.
The exploit is public as of the CVE publication on 2025-08-23, with PoC code hosted on GitHub, but no evidence of active in-the-wild exploitation is reported in the provided data.
Details
- CWE(s)