CVE-2026-2876

Plain English Summary

AI-powered analysis for quick understanding

An attacker can remotely exploit a vulnerability in the Tenda A18 router to execute arbitrary code by sending specially crafted data that causes a buffer overflow. This requires the attacker to have access to the router's settings, specifically through the function that manages MAC address filtering.

Technical Description

A vulnerability was determined in Tenda A18 15.13.07.13. This affects the function parse_macfilter_rule of the file /goform/setBlackRule. This manipulation of the argument deviceList causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.

CVSS Vector Analysis

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
Confidentiality ImpactHigh
Integrity ImpactHigh
Availability ImpactHigh
ScopeChanged

Vector String

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit Resources

Search for proof-of-concept code and exploit modules

Official References

Est. Bounty
$1,842($1K-$5K)
Vendor Response
Grade APatched in 2 days

Quick Information

Published

Feb 21, 2026

about 2 months ago

Last Modified

Feb 23, 2026

about 1 month ago

Vendor

tenda

Product

a18 firmware

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