CVE-2026-10293 Overview
CVE-2026-10293 is a stack-based buffer overflow in the UTT HiPER 1200GW router through firmware version 2.5.3-170306. The flaw resides in the strcpy call within the /goform/formFireWall handler, where the Profile parameter is copied without bounds checking. Remote attackers with low privileges can send a crafted HTTP request to overflow the fixed-size stack buffer. A public exploit has been released, raising the risk of opportunistic attacks against exposed devices. The weakness is classified under [CWE-119] (Improper Restriction of Operations within the Bounds of a Memory Buffer).
Critical Impact
Remote attackers can corrupt stack memory in the HiPER 1200GW firewall handler, enabling denial of service and potentially arbitrary code execution on the router.
Affected Products
- UTT HiPER 1200GW router
- Firmware versions up to and including 2.5.3-170306
- Web management interface endpoint /goform/formFireWall
Discovery Timeline
- 2026-06-01 - CVE-2026-10293 published to NVD
- 2026-06-02 - Last updated in NVD database
Technical Details for CVE-2026-10293
Vulnerability Analysis
The vulnerability exists in the firewall configuration handler exposed at /goform/formFireWall in the UTT HiPER 1200GW web management interface. The handler retrieves the user-supplied Profile parameter from an HTTP request and passes it directly to strcpy. Because strcpy does not enforce destination buffer length, an attacker can supply a Profile value longer than the fixed stack buffer, overwriting adjacent stack data including saved return addresses. The EPSS data places near-term exploitation probability low, but a published proof of concept exists, which increases the likelihood of mass scanning against exposed management interfaces.
Root Cause
The root cause is unsafe use of the strcpy C library function inside the formFireWall handler. The developers did not validate or truncate the Profile argument before copying it into a stack buffer. This is a classic instance of [CWE-119] in embedded HTTP handlers where input length checks are missing.
Attack Vector
An authenticated attacker on the network sends an HTTP POST to /goform/formFireWall with an oversized Profile field. The malformed request triggers stack corruption inside the router's web server process. Successful exploitation can crash the device or, with carefully crafted payloads, redirect execution flow on the MIPS or ARM SoC that powers the router. The attack does not require user interaction and is reachable from any host that can connect to the device's management interface.
No verified proof-of-concept code is reproduced here. Technical details are referenced in the GitHub CVE Summary and the VulDB CVE Record.
Detection Methods for CVE-2026-10293
Indicators of Compromise
- HTTP POST requests to /goform/formFireWall containing abnormally long Profile parameter values
- Unexpected reboots or web-service crashes on the HiPER 1200GW following inbound management traffic
- New or modified firewall profiles created from untrusted source IP addresses
Detection Strategies
- Inspect web server and reverse-proxy logs for requests to /goform/formFireWall with parameter lengths exceeding typical profile name sizes
- Deploy intrusion detection signatures that match Profile= values over a reasonable threshold (for example, 128 bytes)
- Correlate router crash events with preceding HTTP traffic to the management interface
Monitoring Recommendations
- Restrict and monitor administrative access to the router web interface from non-management VLANs
- Forward router syslog and HTTP access logs to a centralized SIEM for anomaly analysis
- Alert on repeated authentication attempts against the HiPER 1200GW followed by long-parameter POST requests
How to Mitigate CVE-2026-10293
Immediate Actions Required
- Block external access to the HiPER 1200GW web management interface at the perimeter
- Limit administrative interface reachability to a dedicated management network or VPN
- Rotate administrator credentials to reduce the value of any captured low-privilege accounts required to reach the vulnerable handler
Patch Information
No vendor advisory or patched firmware release is referenced in the available CVE data at the time of publication. Operators should monitor UTT vendor channels for a firmware update addressing the formFireWall handler. Until a fix is available, treat the device as exposed and apply compensating network controls.
Workarounds
- Disable remote (WAN-side) administration on the HiPER 1200GW
- Place the router's management interface behind an ACL that permits only trusted administrator hosts
- Consider replacing affected units with supported hardware if vendor patches are not forthcoming
# Example: restrict management interface to a single admin host upstream
iptables -I FORWARD -p tcp -d <router_mgmt_ip> --dport 80 -s <admin_host_ip> -j ACCEPT
iptables -I FORWARD -p tcp -d <router_mgmt_ip> --dport 80 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
