CVE-2026-6232— Out-of-bounds write in LR11xx Transceiver
Quick assessment
Affected
Semtech LR1110 Transceiver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Semtech 的 LR11xx 收发器固件中，SPI 主机命令接口存在越界写入漏洞。攻击者可通过构造包含过大长度字段的 SPI 主机命令，导致固件向内部非持久化内存缓冲区边界之外写入多达 254 个任意字节。利用该漏洞需要物理访问设备，以及对 SPI 总线的逻辑访问权限。
Possible ATT&CK Techniques 1 AI
T1200 · Hardware AdditionsAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Semtech | LR1110 Modem-e | < 2.1.1 |
affected |
| Semtech | LR1110 Transceiver | < 0x0403 |
affected |
A1_0303 |
unaffected | ||
| Semtech | LR1120 Transceiver | < 0x0203 |
affected |
A2_0101 |
unaffected | ||
| Semtech | LR1121 Modem-e | < 2.1.1 |
affected |
| Semtech | LR1121 Transceiver | < 0x0105 |
affected |
A3_0101 |
unaffected |
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I. Basic Information for CVE-2026-6232
Vulnerability Information
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Vulnerability Title
Out-of-bounds write in LR11xx Transceiver
Source: CVE Program / CVE List V5
Vulnerability Description
An out-of-bounds write vulnerability in the SPI host command interface of Semtech's LR11xx transceiver firmware where a crafted SPI host command with an oversized length field can cause the firmware to write up to 254 arbitrary bytes past the bounds of an internal, non-persistent memory buffer. Exploitation requires physical access to the device and logical access to the SPI bus.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/R:U/RE:M
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Semtech | LR1110 Transceiver | 0 ~ 0x0403 | - |
|
| Semtech | LR1110 Modem-e | 0 ~ 2.1.1 | - |
|
| Semtech | LR1120 Transceiver | 0 ~ 0x0203 | - |
|
| Semtech | LR1121 Transceiver | 0 ~ 0x0105 | - |
|
| Semtech | LR1121 Modem-e | 0 ~ 2.1.1 | - |
|
II. Public POCs for CVE-2026-6232
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-6232 (1)
IV. Related Vulnerabilities
Same weakness: CWE-787
V. Comments for CVE-2026-6232
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