CVE-2026-76003
Deferred Deferred - Pending Action

Stack-Based Buffer Overflow in UTT HiPER 1200GW

Vulnerability report for CVE-2026-76003, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-19

Last updated on: 2026-08-21

Assigner: VulDB

Description

A weakness has been identified in UTT HiPER 1200GW up to 2.5.3-170306. Affected is the function strcpy of the file /goform/formGroupConfig. Executing a manipulation of the argument timestart can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

CVSS Scores

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Meta Information

Published
2026-08-19
Last Modified
2026-08-21
Generated
2026-09-08
AI Q&A
2026-08-19
EPSS Evaluated
2026-09-07
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
utt hiper_1200gw to 2.5.3-170306 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

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Executive Summary

CVE-2026-76003 is a stack-based buffer overflow vulnerability in the UTT HiPER 1200GW router firmware up to version 2.5.3-170306. It occurs in the strcpy function of the /goform/formGroupConfig file when processing the timestart parameter. An attacker can send a crafted POST request with an excessively long timestart value, causing a buffer overflow that may lead to remote code execution or denial of service.

Detection Guidance

Check network traffic for POST requests to /goform/formGroupConfig with unusually long 'timestart' parameters. Use packet inspection tools like tcpdump or Wireshark to monitor for these requests. Inspect router logs for crashes or unusual behavior in the UTT HiPER 1200GW firmware versions up to v2.5.3-170306.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary code on the affected router, potentially taking control of the device. It could also lead to denial of service, disrupting network connectivity. Since the exploit is publicly available, the risk of widespread attacks is high.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA by enabling remote attacks that may lead to unauthorized access, data breaches, or service disruption. Buffer overflow vulnerabilities can allow attackers to execute arbitrary code, potentially exposing sensitive data or disrupting critical services, which violates data protection and security requirements under these regulations.

Mitigation Strategies

Isolate the affected UTT HiPER 1200GW router from untrusted networks. Disable remote access to the router's web interface if possible. Monitor for exploit attempts and apply firmware updates if released by UTT. Consider replacing the device if no patch is available.

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