CVE-2026-7426

Published: Apr 29, 2026 Last Modified: Mag 04, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,1
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Attack Vector: adjacent
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 8,1
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Attack Vector: adjacent_network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: high

Description

AI Translation Available

Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause memory corruption by sending a crafted Router Advertisement with a prefix length value exceeding the maximum valid length, resulting in a heap buffer overflow. Users processing IPv4 RA only are not impacted.

To mitigate this issue, users should upgrade to the fixed version when available.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0002
Percentile
0,0th
Updated

EPSS Score Trend (Last 2 Days)

787

Out-of-bounds Write

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Other
Potential Impacts:
Modify Memory Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Unexpected State
Applicable Platforms
Languages: Assembly, C, C++, Memory-Unsafe
Technologies: ICS/OT
Likelihood of Exploit: High
View CWE Details
Application

Freertos-Plus-Tcp by Amazon

Product Information
Vendor Amazon
Product Freertos-Plus-Tcp
Version Range Affected
From 4.3.0 (inclusive)
To 4.4.1 (exclusive)
cpe:2.3:a:amazon:freertos-plus-tcp:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Freertos-Plus-Tcp by Amazon

Product Information
Vendor Amazon
Product Freertos-Plus-Tcp
Version Range Affected
From 4.0.0 (inclusive)
To 4.2.6 (exclusive)
cpe:2.3:a:amazon:freertos-plus-tcp:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://aws.amazon.com/security/security-bulletins/2026-023…
https://aws.amazon.com/security/security-bulletins/2026-023-aws/
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/…
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/…
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advi…
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-97qg-435…