CVE-2026-9431: Stack-based Buffer Overflow in Tenda F1202
CVE-2026-9431 is a high-severity stack-based buffer overflow vulnerability in the Tenda F1202 router firmware version 1. 2. 0. 20(408). It occurs in the fromPptpUserAdd function when processing the opttype argument via the /goform/PptpUserAdd endpoint. The vulnerability can be exploited remotely without user interaction or privileges. Although an exploit is publicly available, there are no confirmed reports of exploitation in the wild. No official patch or remediation guidance has been provided yet.
AI Analysis
Technical Summary
This vulnerability affects Tenda F1202 firmware version 1.2.0.20(408) and is triggered by manipulating the opttype argument in the fromPptpUserAdd function within the /goform/PptpUserAdd file. The flaw results in a stack-based buffer overflow, allowing remote attackers to potentially execute arbitrary code or cause a denial of service. The CVSS 4.0 base score is 8.7, indicating high severity, with network attack vector, low attack complexity, no privileges or user interaction required, and high impacts on confidentiality, integrity, and availability. No official remediation or patch information is currently available.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code or disrupt the affected device's operation, impacting confidentiality, integrity, and availability. The vulnerability is remotely exploitable without authentication or user interaction, increasing its risk. However, there are no confirmed reports of active 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 vendor communications for updates. No vendor advisory or official patch information is currently available.
CVE-2026-9431: Stack-based Buffer Overflow in Tenda F1202
Description
CVE-2026-9431 is a high-severity stack-based buffer overflow vulnerability in the Tenda F1202 router firmware version 1. 2. 0. 20(408). It occurs in the fromPptpUserAdd function when processing the opttype argument via the /goform/PptpUserAdd endpoint. The vulnerability can be exploited remotely without user interaction or privileges. Although an exploit is publicly available, there are no confirmed reports of exploitation in the wild. No official patch or remediation guidance has been provided yet.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Tenda F1202 firmware version 1.2.0.20(408) and is triggered by manipulating the opttype argument in the fromPptpUserAdd function within the /goform/PptpUserAdd file. The flaw results in a stack-based buffer overflow, allowing remote attackers to potentially execute arbitrary code or cause a denial of service. The CVSS 4.0 base score is 8.7, indicating high severity, with network attack vector, low attack complexity, no privileges or user interaction required, and high impacts on confidentiality, integrity, and availability. No official remediation or patch information is currently available.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code or disrupt the affected device's operation, impacting confidentiality, integrity, and availability. The vulnerability is remotely exploitable without authentication or user interaction, increasing its risk. However, there are no confirmed reports of active 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 vendor communications for updates. No vendor advisory or official patch information is currently available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-24T07:03:29.836Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a13eec0a5ae1af1aa6777c9
Added to database: 5/25/2026, 6:40:00 AM
Last enriched: 5/25/2026, 6:55:10 AM
Last updated: 5/25/2026, 9:00:38 AM
Views: 6
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