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CVE-2026-2815

Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys

8.4 High

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

0.25%Up 0.1 points since Jun 26, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.4

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 HighCVSS: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 8.4

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 HighCVSS: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 8.4

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 HighCVSS: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 8.4

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 HighCVSS: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 8.4

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 HighCVSS: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

Affected products

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

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.

References

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