CVE-2026-2815
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
CVE-2026-2815 is a high vulnerability (CVSS 8.4) in Silabs.com Sisdk, published June 25, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. No source names a fixed version.
- Severity
- 8.4 HighCVSS 4.0, CVE List
- Exploit chance
- 0.25%EPSS, 16th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
Affected products
What each source reports
CVE List Score used
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
- Record
CVE-2026-2815- CVSS 4.0
- 8.4 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N - Weakness
- CWE-339
- Updated
- 2026-11-02
EUVDEUVD-2026-39394
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
- Record
EUVD-2026-39394- CVSS 4.0
- 8.4 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-f2cj-j66g-55wj
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
- Record
GHSA-f2cj-j66g-55wj- CVSS 4.0
- 8.4 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/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:X/V:X/RE:X/U:X - Weakness
- CWE-339
- Updated
- 2026-11-02
NVD
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
- Record
CVE-2026-2815- CVSS 4.0
- 8.4 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/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:X/V:X/RE:X/U:X - Weakness
- CWE-339
- Updated
- 2026-11-02
OSV
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
- Record
CVE-2026-2815- CVSS 4.0
- 8.4 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N - Weakness
- CWE-339
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000kDYsfIAG?operationContext=S1
github.com/SiliconLabsSoftware/sisdk-release
nvd.nist.gov/vuln/detail/CVE-2026-2815