CVE-2026-12221

Published: Giu 15, 2026 Last Modified: Giu 15, 2026

ExploitDB:

Other exploit source:

Google Dorks:

HIGH 7,3

Source: [email protected]

Attack Vector: adjacent

Attack Complexity: low

Privileges Required: low

User Interaction: none

Confidentiality: N/A

Integrity: N/A

Availability: N/A

HIGH 8,0

Source: [email protected]

Attack Vector: adjacent_network

Attack Complexity: low

Privileges Required: low

User Interaction: none

Scope: unchanged

Confidentiality: high

Integrity: high

Availability: high

HIGH 7,7

Source: [email protected]

Access Vector: adjacent_network

Access Complexity: low

Authentication: single

Confidentiality: complete

Integrity: complete

Availability: complete

Description

AI Translation Available

A vulnerability was found in Yealink SIP-T46U 108.86.0.118. This impacts the function sprintf of the file /api/upgrade/upgrade of the component Firmware Chunk Upload Handler. Performing a manipulation of the argument uid/start_offset results in stack-based buffer overflow. The attack needs to be approached within the local network. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

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

0,0037

Percentile

0,3th

Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

119

Improper Restriction of Operations within the Bounds of a Memory Buffer

Stable

Abstraction: Class Structure: Simple

Common Consequences

Security Scopes Affected:

Integrity Confidentiality Availability

Potential Impacts:

Execute Unauthorized Code Or Commands Modify Memory Read Memory Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory)

Applicable Platforms

Languages: Memory-Unsafe, C, C++, Assembly

Likelihood of Exploit: High

View CWE Details

121

Stack-based Buffer Overflow

Draft

Abstraction: Variant Structure: Simple

Common Consequences

Security Scopes Affected:

Availability Integrity Confidentiality Access Control Other

Potential Impacts:

Modify Memory Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Execute Unauthorized Code Or Commands Bypass Protection Mechanism Other