Description
Buffer Overflow vulnerability in UTT nv518G nv518GV3v3.2.7-210919-161313 allows a remote attacker to cause a denial of service via the gohead//sub_497498 component
Published: 2026-07-02
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability is a buffer overflow in the gohead//sub_497498 component of UTT nv518G firmware (CWE‑119). A crafted network packet can overflow the component’s memory, causing the device to crash or restart. The description does not indicate any disclosure of information or execution of arbitrary code, so the impact is limited to loss of availability for the affected system.

Affected Systems

The flaw affects UTT nv518G routers running firmware version nv518GV3v3.2.7‑210919‑161313. No other vendors or product variants are listed as impacted by the advisory.

Risk and Exploitability

The CVSS score of 6.5 denotes a moderate risk, while an EPSS below 1% suggests a low probability of exploitation at present. The vulnerability is not in the CISA KEV catalog. It can be triggered by a remote attacker sending a specially crafted packet over the network to the gohead interface; therefore exposure to untrusted networks increases risk.

Generated by OpenCVE AI on July 21, 2026 at 12:41 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Install any UTT firmware update that fixes the gohead//sub_497498 buffer overflow condition.
  • Restrict inbound traffic to the gohead interface on all non‑trusted networks, or block it entirely if the interface is not required for operation.
  • Configure monitoring and alerting for repeated device restarts or subsystem failures to detect exploitation attempts early.

Generated by OpenCVE AI on July 21, 2026 at 12:41 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 17 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G Firmware Causing Denial of Service

Wed, 15 Jul 2026 10:30:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G Firmware Causing Denial of Service

Tue, 14 Jul 2026 18:00:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G Firmware Subsystem Causes Remote Denial of Service

Mon, 13 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G Firmware Subsystem Causes Remote Denial of Service

Sun, 12 Jul 2026 09:30:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G Firmware Causes DoS

Sat, 11 Jul 2026 07:30:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G Firmware Causes DoS

Fri, 10 Jul 2026 11:00:00 +0000

Type Values Removed Values Added
Title Remote Denial of Service via Buffer Overflow in UTT nv518G Firmware

Thu, 09 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Title Remote Denial of Service via Buffer Overflow in UTT nv518G Firmware

Wed, 08 Jul 2026 18:00:00 +0000

Type Values Removed Values Added
Title Remote Device Denial of Service via Buffer Overflow in UTT nv518G Firmware

Tue, 07 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Title Remote Device Denial of Service via Buffer Overflow in UTT nv518G Firmware
Weaknesses CWE-120

Mon, 06 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 06 Jul 2026 11:30:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G Firmware Causes Remote Denial of Service
Weaknesses CWE-120

Sun, 05 Jul 2026 21:15:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G Firmware Causes Remote Denial of Service
Weaknesses CWE-120
CWE-787

Sun, 05 Jul 2026 05:15:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G firmware causing remote denial of service
Weaknesses CWE-120
CWE-787

Sat, 04 Jul 2026 21:15:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in UTT nv518G firmware causing remote denial of service
Weaknesses CWE-119

Sat, 04 Jul 2026 06:00:00 +0000

Type Values Removed Values Added
Title Remote DoS via Buffer Overflow in UTT nv518G Firmware
Weaknesses CWE-119

Fri, 03 Jul 2026 22:15:00 +0000

Type Values Removed Values Added
Title Remote DoS via Buffer Overflow in UTT nv518G Firmware
Weaknesses CWE-119
CWE-787

Fri, 03 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Title Remote Denial of Service via Buffer Overflow in UTT nv518G Firmware

Fri, 03 Jul 2026 04:00:00 +0000

Type Values Removed Values Added
Title Remote Denial of Service via Buffer Overflow in UTT nv518G Firmware
Weaknesses CWE-119
CWE-787

Thu, 02 Jul 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Utt
Utt nv518g
Vendors & Products Utt
Utt nv518g

Thu, 02 Jul 2026 20:45:00 +0000

Type Values Removed Values Added
Description Buffer Overflow vulnerability in UTT nv518G nv518GV3v3.2.7-210919-161313 allows a remote attacker to cause a denial of service via the gohead//sub_497498 component
References

Subscriptions

Utt Nv518g
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-07-06T14:31:02.072Z

Reserved: 2026-06-08T00:00:00.000Z

Link: CVE-2026-52188

cve-icon Vulnrichment

Updated: 2026-07-06T14:30:23.659Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-21T12:45:02Z

Weaknesses
  • CWE-119

    Improper Restriction of Operations within the Bounds of a Memory Buffer