CVE-2025-14858: Semtech LR1110 · Sensitive Information in Resource Not Removed Before Reuse
Affects Semtech LR1110Source CVE Database V5
Not known to be exploited · CVSS 5.1 Medium : upgrade to TRX FW 0x0402 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in TRX FW 0x0402, TRX FW 0x0202, TRX FW 0x0104
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:MExploitation evidence
Disclosed: evidence found.
CVE published 7 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade LR1110 to TRX FW 0x0402; LR1120 to TRX FW 0x0202; LR1121 to TRX FW 0x0104.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| SemtechLR1110 | Affected
| Fixed in
|
| SemtechLR1120 | Affected
| Fixed in
|
| SemtechLR1121 | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restrict physical access to devices and their SPI interfaces to trusted personnel only. Monitor Semtech communications for firmware updates addressing this issue. No other specific mitigations are documented at this time.
Description
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.