CVE-2025-8244
Published: 27 July 2025
Summary
CVE-2025-8244 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Totolink X15 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 22.9% 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
Information Input Validation directly prevents buffer overflows by enforcing bounds checking and validation on the macstr POST parameter before processing.
Memory Protection implements safeguards like DEP and ASLR to minimize the impact of buffer overflow exploits attempting arbitrary code execution.
Flaw Remediation requires timely patching of the specific buffer overflow in the HTTP POST handler to eliminate the vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote buffer overflow (CWE-120) in router web interface (/boafrm/formMapDelDevice) via 'macstr' enables unauthenticated exploitation of public-facing application (T1190), remote services (T1210), command injection into Unix shell (T1059.004 per advisories), and DoS via application exploitation (T1499.004).
NVD Description
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been classified as critical. Affected is an unknown function of the file /boafrm/formMapDelDevice of the component HTTP POST Request Handler. The manipulation of the argument macstr leads to buffer overflow.…
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It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
Deeper analysisAI
CVE-2025-8244 is a critical buffer overflow vulnerability affecting the TOTOLINK X15 router running firmware version 1.0.0-B20230714.1105. The issue resides in an unknown function within the file /boafrm/formMapDelDevice of the HTTP POST Request Handler component. It is triggered by manipulating the macstr argument in a POST request, leading to improper bounds checking and overflow. The vulnerability carries a CVSS v3.1 base score of 8.8 and is associated with CWEs-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), CWE-120 (Buffer Copy without Checking Size of Input), and CWE-77 (Command Injection).
The vulnerability can be exploited remotely by an attacker with low privileges (PR:L), requiring network access (AV:N) and low attack complexity (AC:L) with no user interaction (UI:N). Successful exploitation grants high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), potentially allowing arbitrary code execution, data theft, or device takeover on the affected router.
Advisories from VulDB detail the vulnerability and reference a public proof-of-concept exploit available on GitHub at https://github.com/panda666-888/vuls/blob/main/totolink/x15/formMapDelDevice.md, which demonstrates the buffer overflow via the macstr parameter. The vendor's site at https://www.totolink.net/ is listed as a reference, though no specific patches or mitigations are detailed in the provided sources; security practitioners should monitor it for firmware updates.
Details
- CWE(s)