Out-of-bounds write in LR11xx Transceiver

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-6232
StatePUBLISHED
AssignerSemtech
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-12 18:17:23 UTC
Updated2026-10-12 18:17:23 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v4.0 5.2 MEDIUM from [email protected]

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/E:X/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:U/V:X/RE:M/U:X

Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds write

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.2MEDIUMCVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS5.2MEDIUMCVSS: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

CVSS v4.0 Breakdown

Attack Vector
Physical
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/E:X/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:U/V:X/RE:M/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Semtech LR1110 Transceiver affected 0x0403 semver Not specified
CNA Semtech LR1110 Transceiver unaffected A1_0303 semver Not specified
CNA Semtech LR1110 Modem-e affected 2.1.1 semver Not specified
CNA Semtech LR1120 Transceiver affected 0x0203 semver Not specified
CNA Semtech LR1120 Transceiver unaffected A2_0101 semver Not specified
CNA Semtech LR1121 Transceiver affected 0x0105 semver Not specified
CNA Semtech LR1121 Transceiver unaffected A3_0101 Not specified
CNA Semtech LR1121 Modem-e affected 2.1.1 semver Not specified

References

ReferenceSourceLinkTags
www.semtech.com/company/security/security-bulletins/sem-psa-2026-002-lr11xx-s... [email protected] www.semtech.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Egor (radioegor146) Koleda, https://github.com/radioegor146 (en)

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