CVE-2026-10292: Stack-Based Buffer Overflow in UTT HiPER 1200GW Gateway Devices

Technical summary

CVE-2026-10292 is a stack-based buffer overflow in the `/goform/formTaskEdit` endpoint of UTT HiPER 1200GW devices. The vulnerability stems from improper use of the strcpy function, which fails to validate input length before copying user-supplied data onto the stack. This classic memory safety issue allows an authenticated attacker to overwrite the stack frame, potentially hijacking control flow to execute arbitrary code with the privileges of the device process. The vulnerability is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow).

Business impact

Compromise of a UTT HiPER 1200GW device via this vulnerability could allow an attacker to gain full control of the gateway, enabling lateral movement into corporate networks, traffic interception, credential theft, and persistent backdoor installation. For organizations relying on these devices for network access or WAN connectivity, exploitation could disrupt operations, breach data confidentiality and integrity, and complicate incident response. The presence of public exploits and the requirement for only low-privilege authenticated access significantly elevates operational risk.

Affected systems

UTT HiPER 1200GW devices running firmware versions up to and including 2.5.3-170306 are affected. Verify your device firmware version through the management interface. Organizations using these gateways should audit their deployed instances immediately to determine exposure scope and prioritize patching or isolation accordingly.

Exploitability

The vulnerability requires an authenticated attacker on the network to exploit, which narrows the attack surface compared to unauthenticated remote access. However, the requirement for only standard user-level authentication (not administrative), combined with the availability of public exploits and straightforward buffer overflow mechanics, makes this a practical attack vector. Any attacker who obtains valid credentials—through phishing, credential reuse, or insider threat—can launch an exploit without additional user interaction.

Remediation

Update UTT HiPER 1200GW firmware to a patched version beyond 2.5.3-170306. Consult the UTT vendor advisory or support channels to identify the specific fixed version applicable to your device model. Pending patch availability, implement network segmentation to restrict access to the management interface and form handlers, and enforce strong authentication policies to limit credential compromise exposure.

Patch guidance

Contact UTT support or monitor their security advisory channels for official firmware updates addressing CVE-2026-10292. Apply updates in a controlled maintenance window after validating compatibility with your network configuration. If a fixed version has not yet been released, consider whether a temporary isolation or access restriction of affected devices is feasible pending vendor patch availability. Document the patch application process and retain logs for compliance and incident tracking.

Detection guidance

Monitor network traffic to the `/goform/formTaskEdit` endpoint on UTT HiPER 1200GW devices for anomalous POST requests, particularly those containing unusually long parameter values or non-printable characters that may indicate buffer overflow payloads. Log failed authentication attempts and authentication successes followed by suspicious form submissions. Enable device-level logging if available and review logs for stack traces, segmentation faults, or unexpected service restarts. Intrusion detection systems should be configured with signatures for stack overflow patterns targeting this specific endpoint.

Why prioritize this

Although not yet listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, this vulnerability warrants high priority due to the combination of: (1) high CVSS 3.1 score of 8.8 reflecting significant impact potential; (2) publicly available exploit code reducing barriers to attack; (3) authenticated but low-privilege exploitation pathway; and (4) potential for complete device compromise and lateral network access. Organizations should treat this as a near-term remediation target, especially if affected devices are internet-facing or accessible to untrusted network segments.

Risk score, explained

The CVSS 3.1 score of 8.8 (HIGH) reflects a network-accessible vulnerability with low attack complexity and low privilege requirements that results in high confidentiality, integrity, and availability impact. The score appropriately captures the severity of arbitrary code execution on a network gateway device. The absence of user interaction as a requirement and the authenticated (but not administrative) privilege level position this as a significant but not critical risk; organizations with strict network segmentation or devices isolated from internet access face lower immediate risk than those with internet-connected or public-facing instances.

Frequently asked questions