Skip to main content
VulnerabilityPublished

CVE-2025-14859: Semtech LR1110 · Weak Cryptography

Affects Semtech LR1110Source CVE Database V5

0
Compare

Not known to be exploited · CVSS 7.0 High : upgrade to BL2 FW 0x1001 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
7.0High
How severe the flaw is on the 0–10 CVSS scale.
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 BL2 FW 0x1001, BL2 FW 0x2001, BL2 FW 0x2101
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/AU:N/R:I/V:C/RE:M

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 BL2 FW 0x1001; LR1120 to BL2 FW 0x2001; LR1121 to BL2 FW 0x2101.

Affected software

ProductAffectedFixed in
SemtechLR1110Affected
  • =0
Fixed in
  • BL2 FW 0x1001
SemtechLR1120Affected
  • =0
Fixed in
  • BL2 FW 0x2001
SemtechLR1121Affected
  • =0
Fixed in
  • BL2 FW 0x2101

AI-suggested

If you cannot patch yet, restrict physical access to affected devices to mitigate risk. Monitor for vendor updates regarding patches or secure boot improvements.

Description

The Semtech LR11xx LoRa transceivers implement secure boot functionality using digital signatures to authenticate firmware. However, the implementation uses a non-standard cryptographic hashing algorithm that is vulnerable to second preimage attacks. An attacker with physical access to the device can exploit this weakness to generate a malicious firmware image with a hash collision, bypassing the secure boot verification mechanism and installing arbitrary unauthorized firmware on the device.

References

Community reviews

Loading reviews…