CVE-2026-4862

Summary

A critical memory corruption vulnerability (CVE-2026-4862) has been identified in the UTT HiPER 1250GW router, affecting versions up to 3. The vulnerability stems from an unchecked memory buffer operation (CWE-119) within the device's administrative or network routing services.

Technical Details

The issue is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer). At its core, the affected binary fails to validate the size of input payloads before performing memory copy or write operations.

When a maliciously crafted payload is sent to the router, it overflows the intended buffer, overwriting critical return addresses or adjacent variables in the memory space.

Exploitation Context

• Vector: Remote / Network-based
• Authentication: Not required
• Complexity: Low
• Impact: High (Confidentiality, Integrity, and Availability)

Because routers are edge devices exposed to external networks, arbitrary code execution (RCE) at the router level grants attackers a potential foothold into the entire subsequent LAN architecture.

Remediation

Users of UTT HiPER 1250GW should immediately:

1. Contact the vendor for an updated firmware patch addressing this memory corruption flaw.
2. In the interim, restrict access to the device's administrative interface, ensuring it is not exposed directly to the public internet.
3. Deploy Web Application Firewalls (WAF) or Intrusion Prevention Systems (IPS) with rulesets designed to block anomalous payload sizes.

Precogs AI Binary Integration

For enterprise environments managing custom or proprietary firmware fleets, the Precogs AI Binary Security Platform can scan raw binaries (without requiring source code) to automatically pinpoint CWE-119 overflow conditions. By statically simulating execution paths, Precogs AI identifies bounds-checking failures before the firmware is deployed to edge devices.

Vulnerability Code Signature

Attack Data Flow

Vulnerable Code Pattern

// ❌ VULNERABLE: Memory Buffer Overflow
void process_data(char *input) {
    char buffer[64];
    // Taint sink: copies without bounds checking
    strcpy(buffer, input);
}

Secure Code Pattern

// ✅ SECURE: Bounded copy
void process_data(char *input) {
    char buffer[64];
    // Sanitized boundary check
    strncpy(buffer, input, sizeof(buffer) - 1);
    buffer[sizeof(buffer) - 1] = '\0';
}

How Precogs Detects This

Precogs Binary SAST engine explicitly uncovers memory boundary violations and unsafe memory management functions in compiled binaries.\n