CVE-2026-3815
Published: 09 March 2026
Summary
CVE-2026-3815 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Utt 810G Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 9.3th 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mandates identification, reporting, testing, and correction of the specific buffer overflow flaw in the strcpy function of /goform/formApMail.
Enforces validation of inputs to the /goform/formApMail function to prevent buffer overflow from improper input handling.
Implements memory safeguards such as address space layout randomization or stack canaries to protect against arbitrary code execution from the buffer overflow.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in public web form (/goform/formApMail) enables remote authenticated RCE on network device (T1190: Exploit Public-Facing Application); PR:L requirement with full CIA impact indicates likely privilege escalation to root/code execution context (T1068).
NVD Description
A weakness has been identified in UTT HiPER 810G up to 1.7.7-1711. This affects the function strcpy of the file /goform/formApMail. Executing a manipulation can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has…
more
been made available to the public and could be used for attacks.
Deeper analysisAI
CVE-2026-3815 is a buffer overflow vulnerability in UTT HiPER 810G versions up to 1.7.7-1711. The flaw affects the strcpy function in the file /goform/formApMail, where improper input handling allows manipulation leading to a buffer overflow. Published on 2026-03-09, it is associated with CWEs-119 and CWE-120 and 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).
The vulnerability enables remote exploitation by an attacker with low privileges (PR:L), requiring low attack complexity and no user interaction. Successful exploitation can result in high impacts to confidentiality, integrity, and availability, potentially allowing arbitrary code execution or denial of service on the affected device.
VulDB advisories (ctiid.349781, id.349781, submit.769164) document the issue, and a public proof-of-concept exploit is available at https://github.com/whoami648/cve/blob/main/vul/10.md.
The exploit has been made publicly available and could be used for attacks.
Details
- CWE(s)