Submit #826415: UTT HiPER 1200GW <=v2.5.3-170306 Buffer Overflow

A serious buffer overflow vulnerability has been identified in the UTT Aggressive HiPER 1200GW router. The issue resides in the /goform/formTaskEdit endpoint, where insufficient bounds checking on user-supplied input allows an attacker to trigger a stack-based buffer overflow.

By sending a specially crafted HTTP request to /goform/formTaskEdit with an oversized parameter value, the attacker can overflow a fixed-size buffer located on the stack. The root cause lies in the insecure use of the strcpy function at the following code location: strcpy(InstPointByIndex + 20, src);. The destination buffer, InstPointByIndex, is of a fixed length, but the source data (src) is directly copied from user-controlled input without any length validation. When the input exceeds the buffer's capacity, data beyond the buffer boundary is overwritten, corrupting adjacent stack memory.

• Source: ⚠️ https://github.com/yuezhaoshanmu/cve/blob/main/1.md
• User: Missa (UID 98182)
• Submission: 05/12/2026 06:10 (3 months ago)
• Moderation: 05/31/2026 19:47 (20 days later)
• Status: Accepted
• VulDB entry: 367585 [UTT HiPER 1200GW up to 2.5.3-170306 /goform/formTaskEdit strcpy stack-based overflow]
• Points: 20