CVE-2026-8137: Buffer Overflow in Totolink X5000R
A vulnerability has been found in Totolink X5000R 9.1.0u.6369_B20230113. This vulnerability affects the function sub_458E40 of the file /boafrm/formDdns. The manipulation of the argument submit-url leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.
AI Analysis
Technical Summary
The Totolink X5000R router firmware 9.1.0u.6369_B20230113 contains a buffer overflow vulnerability in the sub_458E40 function of the /boafrm/formDdns component. This vulnerability is triggered by manipulating the submit-url argument, which leads to memory corruption. The vulnerability is remotely exploitable with no user interaction required and low complexity, potentially allowing an attacker to execute arbitrary code or cause denial of service. The CVSS v4.0 base score is 8.7, indicating high severity. No official patch or vendor advisory is currently available, and the vulnerability state is published.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to cause a buffer overflow, potentially leading to arbitrary code execution or denial of service on the affected device. The vulnerability requires low privileges and no user interaction, increasing the risk of remote compromise. However, there are no confirmed reports of exploitation in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider limiting network exposure of the affected device and monitor for updates from Totolink. No vendor-provided mitigation or temporary fix is currently available.
CVE-2026-8137: Buffer Overflow in Totolink X5000R
Description
A vulnerability has been found in Totolink X5000R 9.1.0u.6369_B20230113. This vulnerability affects the function sub_458E40 of the file /boafrm/formDdns. The manipulation of the argument submit-url leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Totolink X5000R router firmware 9.1.0u.6369_B20230113 contains a buffer overflow vulnerability in the sub_458E40 function of the /boafrm/formDdns component. This vulnerability is triggered by manipulating the submit-url argument, which leads to memory corruption. The vulnerability is remotely exploitable with no user interaction required and low complexity, potentially allowing an attacker to execute arbitrary code or cause denial of service. The CVSS v4.0 base score is 8.7, indicating high severity. No official patch or vendor advisory is currently available, and the vulnerability state is published.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to cause a buffer overflow, potentially leading to arbitrary code execution or denial of service on the affected device. The vulnerability requires low privileges and no user interaction, increasing the risk of remote compromise. However, there are no confirmed reports of exploitation in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider limiting network exposure of the affected device and monitor for updates from Totolink. No vendor-provided mitigation or temporary fix is currently available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-07T17:56:23.727Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fd6bcccbff5d861092329a
Added to database: 5/8/2026, 4:51:24 AM
Last enriched: 5/8/2026, 5:06:28 AM
Last updated: 5/9/2026, 2:52:26 AM
Views: 13
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