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CVE-2025-14857— Semtech LR11xx Memory Write Access Control Bypass

Quick assessment

Affected
Semtech LR1110
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Semtech LR11xx LoRa是美国Semtech公司的一系列低功耗无线通信芯片。 Semtech LR11xx LoRa存在安全漏洞，该漏洞源于早期固件版本存在访问控制不当，可能导致具有物理访问权限的攻击者劫持程序控制流并执行有限任意代码。

AI Predicted 5.8 Difficulty: Moderate EPSS 0.24% · P16
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I. Basic Information for CVE-2025-14857

Vulnerability Information
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Vulnerability Title
Semtech LR11xx Memory Write Access Control Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
An improper access control vulnerability exists in Semtech LoRa LR11xxx transceivers running early versions of firmware where the memory write command accessible via the physical SPI interface fails to enforce write protection on the program call stack. An attacker with physical access to the SPI interface can overwrite stack memory to hijack program control flow and achieve limited arbitrary code execution. However, the impact is limited to the active attack session: the device's secure boot mechanism prevents persistent firmware modification, the crypto engine isolates cryptographic keys from direct firmware access, and all modifications are lost upon device reboot or loss of physical access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/AU:N/R:A/V:D/RE:M
Source: CVE Program / CVE List V5
Vulnerability Type
任意地址可写任意内容条件
Source: CVE Program / CVE List V5
Vulnerability Title
Semtech LR11xx LoRa 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Semtech LR11xx LoRa是美国Semtech公司的一系列低功耗无线通信芯片。 Semtech LR11xx LoRa存在安全漏洞，该漏洞源于早期固件版本存在访问控制不当，可能导致具有物理访问权限的攻击者劫持程序控制流并执行有限任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Semtech LR1110 0 ~ TRX FW 0x0402 -
Semtech LR1120 0 ~ TRX FW 0x0202 -
Semtech LR1121 0 ~ TRX FW 0x0104 -

II. Public POCs for CVE-2025-14857

# POC Description Source Link Shenlong Link
1 None https://github.com/Ermensonx/CVE-2025-14857-MongoBleed POC Details
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III. Intelligence Information for CVE-2025-14857

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Same Patch Batch · Semtech · 2026-04-07 · 3 CVEs total

CVE-2025-14858 Semtech LR11xx Encrypted Firmware Disclosure
CVE-2025-14859 Semtech LR11xx Secure Boot Bypass

IV. Related Vulnerabilities

Same product: LR1110
Same vendor: Semtech
Same weakness: CWE-123

V. Comments for CVE-2025-14857

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