CVE-2025-9362
Published: 23 August 2025
Summary
CVE-2025-9362 is a medium-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Linksys Re6250 Firmware. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 37.2th percentile by exploit likelihood (below the median); 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-2025-9362 is a stack-based buffer overflow vulnerability affecting the urlFilterManageRule function in the /goform/urlFilterManageRule component of Linksys Wi-Fi 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, associated with CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow), arises from manipulating the arguments urlFilterRuleName, scheduleUrl, or addURLFilter. It carries 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) and was published on 2025-08-23.
The vulnerability can be exploited remotely over the network with low complexity and low privileges required, such as an authenticated user with limited access. No user interaction is needed, and exploitation leads to low-level impacts on confidentiality, integrity, and availability, potentially allowing partial data exposure, modification, or denial of service through the buffer overflow.
Advisories from VulDB (ctiid.321065, id.321065, submit.631534) and a GitHub repository detail the issue but note that the vendor, Linksys, was contacted early without response, indicating no official patches or mitigations are available as of disclosure. The Linksys support site provides no specific guidance on this CVE.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-25638
Vulnerability details
A flaw has been found 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 impacted element is the function urlFilterManageRule of the file /goform/urlFilterManageRule. Executing manipulation of the argument urlFilterRuleName/scheduleUrl/addURLFilter can lead to stack-based buffer overflow. The attack…
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may be launched remotely. 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?
Remote stack-based buffer overflow in web management interface (/goform/urlFilterManageRule) enables exploitation of public-facing applications (T1190), remote services (T1210), and application/system exploitation for denial of service (T1499.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation of inputs (urlFilterRuleName, scheduleUrl, addURLFilter) to the /goform/urlFilterManageRule endpoint, preventing the stack buffer overflow.
Enforces memory-protection mechanisms that block exploitation of the stack-based buffer overflow even if malformed input reaches the function.
Restricts the authenticated low-privilege accounts that can reach the vulnerable urlFilterManageRule function, reducing the attack surface.