Submit #826416: UTT HiPER 1250GW <=v2.5.3-170306 Buffer Overflow

A serious buffer overflow vulnerability has been identified in the UTT HiPER 1250GW router. The vulnerability exists in the /goform/formFireWall endpoint, where improper input validation allows an attacker to trigger a stack-based buffer overflow by manipulating the Profile parameter.

By sending a specially crafted HTTP request to /goform/formFireWall containing an oversized value in the Profile parameter, an attacker can overflow a fixed-size buffer allocated on the stack. The root cause of this vulnerability is the unsafe use of the strcpy function at the following code location: strcpy((char *)(InstPointByIndex + 216), src_1);. Here, the destination buffer is offset 216 bytes from InstPointByIndex and has a fixed allocation, yet the source string src_1 is populated directly from the attacker-controlled Profile parameter without any boundary checks. When the supplied input exceeds the size of the destination buffer, excess data overwrites adjacent memory on the stack, including critical control data.

• Source: ⚠️ https://github.com/yuezhaoshanmu/cve/blob/main/2.md
• User: Missa (UID 98182)
• Submission: 05/12/2026 06:11 (3 months ago)
• Moderation: 05/31/2026 19:47 (20 days later)
• Status: Accepted
• VulDB entry: 367586 [UTT HiPER 1200GW up to 2.5.3-170306 /goform/formFireWall strcpy Profile stack-based overflow]
• Points: 20