Unauthenticated service interruption via stack buffer overflow
Published Jun 30, 2026 · Updated Jun 30, 2026
Buffer overflow in the gohead service of UTT nv518G firmware nv518GV3v3.2.7-210919-161313 allows remote attackers to interrupt service. The formLinkageConfReName handler uses strcat to append an attacker-controlled oldName or newName value to a fixed stack buffer without checking its length, corrupting adjacent memory and the return address. No authentication or user interaction is required; the CVE reports service interruption, while the published proof of concept does not demonstrate code execution.
Summary
What happened
Buffer overflow in the gohead service of UTT nv518G firmware nv518GV3v3.2.7-210919-161313 allows remote attackers to interrupt service. The formLinkageConfReName handler uses strcat to append an attacker-controlled oldName or newName value to a fixed stack buffer without checking its length, corrupting adjacent memory and the return address. No authentication or user interaction is required; the CVE reports service interruption, while the published proof of concept does not demonstrate code execution.
The record
- CVE
- CVE-2026-52193
- Published
- Jun 30, 2026
- Updated
- Jun 30, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 30, 2026CVE publishedPublication date reported by the CVE source.
- Jun 30, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- formLinkageConfReName HTTP request proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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