EUVD-2026-40867
GHSA-pj2j-v5vq-rq7x
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Remote crash of the unauthenticated gohead service (AV:N/AC:L/PR:N/UI:N) with availability-only impact (A:H, C:N/I:N); no scope change, consistent with the supplied vector.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
3DescriptionCVE.org
An issue in UTT nv518G nv518GV3v3.2.7-210919-161313 allows a remote attacker to cause a denial of service via the gohead/sub_44af70 component
AnalysisAI
Denial of service in the UTT nv518G router (firmware nv518GV3v3.2.7-210919-161313) allows a remote attacker to crash or hang the device by sending crafted input to the gohead/sub_44af70 (FUN_0044af70) component of its embedded web/management service. Rated CVSS 7.5 (availability-only impact), the flaw is network-reachable without authentication or user interaction but does not expose or alter data. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the router's embedded gohead web/management service and the ability to send a crafted request that reaches the gohead/sub_44af70 (FUN_0044af70) handler; per CVSS (AV:N/AC:L/PR:N/UI:N) no authentication, user interaction, or special privileges are needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are consistent but modest in real-world priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who can reach the router's gohead management web service - from the LAN, or from the Internet if remote administration is enabled - sends a single crafted HTTP request that reaches the sub_44af70 handler and exhausts device resources, knocking the router offline and cutting network connectivity for everyone behind it. A GitHub report documenting the vulnerable function lowers the reverse-engineering effort for building a working proof of concept, though no weaponized exploit is publicly confirmed. |
| Remediation | No vendor-released patched firmware version is identified at time of analysis; the CVE and EUVD records contain no fix version, and only the general UTT download center is referenced. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all UTT nv518G routers deployed across your organization and identify affected firmware versions. …
Sign in for detailed remediation steps and compensating controls.
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Same weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
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External POC / Exploit Code
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