UTT nv518G CVE-2026-52192
HIGHSeverity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable web daemon, no auth or interaction (AV:N/AC:L/PR:N/UI:N); uncontrolled consumption crashes the service so A:H only, with C:N/I:N as impact is availability-only.
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_445C5C component
AnalysisAI
Denial of service in the UTT nv518G security gateway (firmware nv518GV3 v3.2.7-210919-210919/161313) lets a remote, unauthenticated attacker crash or hang the device by triggering uncontrolled resource consumption in the gohead/sub_445C5C (FUN_00445c5c) handler of the built-in GoAhead-style web management daemon. No public exploit is identified in the source data, though a GitHub technical write-up reverse-engineering the vulnerable function is available; EPSS is low (0.20%, 10th percentile) and the CVE is not on CISA KEV, so exploitation is theoretical rather than confirmed. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the embedded 'gohead' web management daemon of a UTT nv518G running firmware nv518GV3 v3.2.7-210919-161313 and the ability to send a crafted request to the code path handled by sub_445C5C/FUN_00445c5c; per the CVSS vector (AV:N/AC:L/PR:N/UI:N) no authentication, no special configuration, and no user interaction are needed once that interface is reachable. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are mostly consistent but point to modest real-world priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network reachability to the gateway's web management interface sends a crafted HTTP request to the endpoint served by the gohead/sub_445C5C handler, driving it into uncontrolled resource consumption that exhausts CPU/memory and hangs or crashes the daemon. The result is loss of network connectivity and administrative access until the device recovers or is rebooted. … |
| Remediation | No vendor-released patched firmware version is identified in the available data, so no exact fix version can be cited. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Restrict network access to the GoAhead web management interface (port-level) to authorized administrative networks only. …
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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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