How severe is CVE-2026-47147?

CVE-2026-47147 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.

Is CVE-2026-47147 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-47147?

CVE-2026-47147 affects Silabs Emberznet. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-47147?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-47147 have an EU (EUVD) identifier?

Yes. CVE-2026-47147 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39401.

When was CVE-2026-47147 published?

CVE-2026-47147 was published on 2026-06-25.

CVE-2026-47147

CVE-2026-47147 is a high-severity vulnerability in Silabs Emberznet with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v4: 7.1
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39401
Weakness: CWE-125
Affected product: Silabs Emberznet
Published: 2026-06-25
Last modified: 2026-06-25

Description

In EmberZNet v9.0.2 and earlier, malformed OTA requests can drive the OTA server parser into out-of-bounds reads. A limited amount of data from RAM is read back to the requester. The size and location of this data is limited. These requests must come from a device that has already joined the network. Only devices supporting the OTA Server cluster may be impacted.

Frequently asked questions

What is CVE-2026-47147?: In EmberZNet v9.0.2 and earlier, malformed OTA requests can drive the OTA server parser into out-of-bounds reads. A limited amount of data from RAM is read back to the requester. The size and location of this data is limited. These requests must come from a device that has already joined the network. Only devices supporting the OTA Server cluster may be impacted.
How severe is CVE-2026-47147?: CVE-2026-47147 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.
Is CVE-2026-47147 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-47147?: CVE-2026-47147 affects Silabs Emberznet. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-47147?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-47147 have an EU (EUVD) identifier?: Yes. CVE-2026-47147 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39401.
When was CVE-2026-47147 published?: CVE-2026-47147 was published on 2026-06-25.

References

Affected products (1)

cpe:2.3:a:silabs:emberznet:*:*:*:*:*:*:*:*

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