CVE-2025-6734 Details
Description
A vulnerability was found in UTT HiPER 840G up to 3.1.1-190328. It has been rated as critical. This issue affects the function sub_484E40 of the file /goform/formP2PLimitConfig of the component API. The manipulation of the argument except leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
A critical buffer overflow vulnerability has been identified in the UTT HiPER 840G router, affecting firmware versions through 3.1.1-190328. The vulnerability resides in the API endpoint '/goform/formP2PLimitConfig', specifically within the function 'sub_484E40'. An attacker can manipulate the 'except' parameter, leading to a stack-based buffer overflow. This vulnerability can be exploited remotely, causing a denial-of-service condition.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 27, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/d2pq/cve/blob/main/616/3.md | [email protected] | ExploitThird Party Advisory |
| https://github.com/d2pq/cve/blob/main/616/3.md#poc | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.314009 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.314009 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.597679 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| utt 840g firmware | <= 3.1.1-190328 |
CPE
Remediation
| |
| utt 840g | 3.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 8, 2026 | Initial Analysis | [email protected] |
| Jun 26, 2025 | New CVE Received | [email protected] |