CVE-2026-4961

Tenda AC6 POST Request QuickIndex formQuickIndex stack-based overflow

HIGH
8.8
CVSS Score
Published: March 27, 2026 at 04:09 PM UTC
Updated: October 26, 2026 at 12:10 AM UTC
1 product affected across 1 vendorAC6 Firmware· also runs on 1 platform

Using AC6 by Tenda?

Get instant alerts when new vulnerabilities affect AC6 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.8
Exploit prediction
EPSS 0.8%
SSVC
PoC

Description

A vulnerability was identified in Tenda AC6 15.03.05.16. Affected by this vulnerability is the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. The manipulation of the argument PPPOEPassword leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.353838
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.353838
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.777617
Product
Source: cverecord
https://www.tenda.com.cn/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121CWE-119CWE-787

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card