Vulnerability-Lookup

GHSA-PQ38-4MFG-VPXJ

Vulnerability from github – Published: 2026-04-07 21:32 – Updated: 2026-04-07 21:32

Details

The Semtech LR11xx LoRa transceivers running early versions of firmware contains an information disclosure vulnerability in its firmware validation functionality. When a host issues a firmware validity check command via the SPI interface, the device decrypts the provided encrypted firmware package block-by-block to validate its integrity. However, the last decrypted firmware block remains uncleared in memory after the validation process completes. An attacker with access to the SPI interface can subsequently issue memory read commands to retrieve the decrypted firmware contents from this residual memory, effectively bypassing the firmware encryption protection mechanism. The attack requires physical access to the device's SPI interface.

Severity

5.1 (Medium)


                  
                    CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/AU:N/R:A/V:C/RE:M

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{
  "affected": [],
  "aliases": [
    "CVE-2025-14858"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-226"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-07T20:16:22Z",
    "severity": "MODERATE"
  },
  "details": "The Semtech LR11xx LoRa transceivers running early versions of firmware contains an information disclosure vulnerability in its firmware validation functionality. When a host issues a firmware validity check command via the SPI interface, the device decrypts the provided encrypted firmware package block-by-block to validate its integrity. However, the last decrypted firmware block remains uncleared in memory after the validation process completes. An attacker with access to the SPI interface can subsequently issue memory read commands to retrieve the decrypted firmware contents from this residual memory, effectively bypassing the firmware encryption protection mechanism. The attack requires physical access to the device\u0027s SPI interface.",
  "id": "GHSA-pq38-4mfg-vpxj",
  "modified": "2026-04-07T21:32:39Z",
  "published": "2026-04-07T21:32:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-14858"
    },
    {
      "type": "WEB",
      "url": "https://www.semtech.com/company/security/security-bulletins/sem-psa-2026-001"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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:N/R:A/V:C/RE:M/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-14858 (GCVE-0-2025-14858)

Vulnerability from cvelistv5 – Published: 2026-04-07 19:57 – Updated: 2026-04-07 20:42

Title

Semtech LR11xx Encrypted Firmware Disclosure

Summary

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/AU:N/R:A/V:C/RE:M

CWE

CWE-226 - Sensitive Information in Resource Not Removed Before Reuse

Assigner

SWI

References

1 reference

URL	Tags
https://www.semtech.com/company/security/security…

Impacted products

3 products

Vendor	Product	Version
Semtech	LR1110	Affected: 0 , < TRX FW 0x0402 (custom)
Semtech	LR1120	Affected: 0 , < TRX FW 0x0202 (custom)
Semtech	LR1121	Affected: 0 , < TRX FW 0x0104 (custom)

Date Public

2026-04-06 18:07

Credits

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

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-PQ38-4MFG-VPXJ

CVE-2025-14858 (GCVE-0-2025-14858)

Tags

Sightings

Nomenclature