CVE-2026-4961 | Tenda AC6 15.03.05.16 POST Request /goform/QuickIndex formQuickIndex PPPOEPassword stack-based overflow

VDB-353838 · CVE-2026-4961 · GCVE-100-353838 TENDA AC6 15.03.05.16 POST REQUEST /GOFORM/QUICKINDEX FORMQUICKINDEX PPPOEPASSWORD STACK-BASED OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.0 $0-$5k 1.86 Summaryinfo A vulnerability, which was classified as critical, was found in Tenda AC6 15.03.05.16. Affected by this issue is the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. The manipulation of the argument PPPOEPassword results in stack-based overflow. This vulnerability was named CVE-2026-4961. The attack may be performed from remote. In addition, an exploit is available. Detailsinfo A vulnerability, which was classified as critical, was found in Tenda AC6 15.03.05.16. Affected is the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. The manipulation of the argument PPPOEPassword with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. The advisory is available at lavender-bicycle-a5a.notion.site. This vulnerability is traded as CVE-2026-4961. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details and a public exploit are known. The exploit is shared for download at lavender-bicycle-a5a.notion.site. It is declared as proof-of-concept. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Router Operating System Vendor Tenda Name AC6 Version 15.03.05.16 License commercial Website Vendor: https://www.tenda.com.cn/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 8.8 VulDB Meta Temp Score: 8.0 VulDB Base Score: 8.8 VulDB Temp Score: 8.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Stack-based overflow CWE: CWE-121 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/27/2026 Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Vendor: tenda.com.cn Advisory: lavender-bicycle-a5a.notion.site Status: Not defined CVE: CVE-2026-4961 (🔒) GCVE (CVE): GCVE-0-2026-4961 GCVE (VulDB): GCVE-100-353838 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/27/2026 09:15 Changes: 03/27/2026 09:15 (58) Complete: 🔍 Submitter: wxhwxhwxh_mie Cache ID: 99:892:101 Submitinfo Accepted Submit #777617: Tenda AC6 AC6 V1.0 V15.03.05.16 Buffer Overflow (by wxhwxhwxh_mie) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸