CVE-2026-52191 Details
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_444C8C component
A buffer overflow vulnerability has been identified in the UTT nv518G firmware version nv518GV3v3.2.7-210919-161313. This vulnerability allows remote attackers to cause a denial-of-service condition by exploiting the gohead/sub_444C8C component. The issue arises when an HTTP request is sent with an excessively long port parameter. The websGetVar() function retrieves this user-controlled input and appends it to a stack buffer without proper length validation. This overflow can overwrite the saved return address, potentially leading to arbitrary code execution.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 2, 2026CISA-ADP
Assessed Jul 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/akuma-QAQ/CVEreport/tree/main/518G/FUN_00444c8c | CISA-ADP | ExploitTechnical Description |
| https://github.com/akuma-QAQ/CVEreport/tree/main/518G/FUN_00444c8c | [email protected] | ExploitTechnical Description |
| https://utt.com.cn/downloadcenter.php?filetypeid=3&model=518G&lang=zhcn | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| UTT nv518G | nv518GV3v3.2.7-210919-161313 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 6, 2026 | CVE Modified | CISA-ADP |
| Jul 2, 2026 | New CVE Received | [email protected] |