CVE-2026-4488
Published: 20 March 2026
Summary
CVE-2026-4488 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 39.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2026-4488 is a buffer overflow vulnerability affecting the UTT HiPER 1250GW router in versions up to 3.2.7-210907-180535. The flaw exists in the strcpy function within the /goform/setSysAdm file, where manipulation of the GroupName argument triggers the overflow. It is associated with CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-120 (Buffer Copy without Checking Size of Input).
An attacker with low privileges can exploit this vulnerability remotely over the network with low complexity and no user interaction required, as indicated by its CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Successful exploitation could result in high impacts to confidentiality, integrity, and availability, potentially enabling arbitrary code execution or denial of service. A public exploit is available, increasing the risk of widespread abuse.
VulDB advisories (vuldb.com/?ctiid.352011, vuldb.com/?id.352011, vuldb.com/?submit.773565) document the issue, and a proof-of-concept is hosted on GitHub (github.com/hmkunlun/UTTHiPER/blob/main/HiPER%201250GW.md). No specific patch or mitigation details are provided in the available information.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-13727
Vulnerability details
A vulnerability was identified in UTT HiPER 1250GW up to 3.2.7-210907-180535. Affected is the function strcpy of the file /goform/setSysAdm. Such manipulation of the argument GroupName leads to buffer overflow. It is possible to launch the attack remotely. The exploit…
more
is publicly available and might be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote buffer overflow in router web form (/goform/setSysAdm) with low-privilege access enables T1190 (Exploit Public-Facing Application) for initial compromise and T1068 (Exploitation for Privilege Escalation) to achieve arbitrary code execution/DoS from limited credentials.
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires timely identification, reporting, and correction of flaws like this buffer overflow vulnerability through patching and testing.
Mandates validation of inputs such as the GroupName argument to prevent buffer overflows from improper restriction of operations within memory bounds.
Implements memory safeguards like non-executable stacks and address space randomization to protect against exploitation of buffer overflows leading to arbitrary code execution.