CVE-2026-19341 in HiPER 1200GW
Summary
by MITRE • 08/09/2026
A security vulnerability has been detected in UTT HiPER 1200GW up to 2.5.3-170306. This impacts the function strcpy of the file /goform/pptpSrvGlobalConfig. Such manipulation of the argument EncryptionMode leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 08/10/2026
The UTT HiPER 1200GW router series represents a network infrastructure device that handles various configuration parameters through web-based management interfaces. This particular vulnerability affects firmware versions up to 2.5.3-170306, indicating a widespread issue across multiple iterations of the device's software stack. The affected component resides within the /goform/pptpSrvGlobalConfig file which manages Point-to-Point Tunneling Protocol server global configuration settings. The vulnerability stems from improper input validation and handling within the strcpy function implementation, creating a classic stack-based buffer overflow condition that can be exploited by remote attackers without authentication requirements.
The technical flaw manifests when manipulating the EncryptionMode parameter through the web interface, where insufficient bounds checking allows an attacker to provide input exceeding the allocated buffer space. This buffer overflow occurs because the strcpy function does not verify the length of incoming data before copying it to a fixed-size stack buffer, enabling attackers to overwrite adjacent memory locations including return addresses and control data. The vulnerability is particularly dangerous as it enables remote code execution capabilities through carefully crafted payloads that can overwrite program execution flow, potentially allowing full system compromise.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as the remote exploitation capability means attackers can gain unauthorized access to the network device without requiring physical proximity or local credentials. This creates significant risk for organizations relying on these devices for network security, as compromised routers can serve as entry points for broader network infiltration, enabling man-in-the-middle attacks, traffic interception, and potential lateral movement within corporate networks. The public disclosure of exploitation techniques further amplifies the threat landscape, as malicious actors can readily leverage existing proof-of-concept code to target vulnerable installations.
Security professionals should immediately implement network segmentation strategies to limit access to affected devices while coordinating with the vendor for firmware updates, though the lack of vendor response creates additional risk management challenges. Mitigation approaches include disabling unnecessary services such as PPTP server functionality when not required, implementing network access controls through firewalls to restrict web management access, and deploying intrusion detection systems to monitor for exploitation attempts. This vulnerability aligns with CWE-121 Stack-based Buffer Overflow and maps to attack techniques within the MITRE ATT&CK framework under T1059 Command and Scripting Interpreter and T1071 Application Layer Protocol for network traffic manipulation. Organizations should also consider conducting comprehensive vulnerability assessments of their entire network infrastructure to identify similar insecure coding practices in other network devices and firmware implementations.