How severe is CVE-2025-2838?

CVE-2025-2838 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-2838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-2838?

CVE-2025-2838 affects Silabs Gecko Os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-2838?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-2838 have an EU (EUVD) identifier?

Yes. CVE-2025-2838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8257.

When was CVE-2025-2838 published?

CVE-2025-2838 was published on 2025-03-26 and last updated on 2026-06-17.

CVE-2025-2838

CVE-2025-2838 is a medium-severity vulnerability in Silabs Gecko Os with a CVSS 3.x base score of 6.5. 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-835.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-8257
Weakness: CWE-835
Affected product: Silabs Gecko Os
Published: 2025-03-26
Last modified: 2026-06-17

Description

Silicon Labs Gecko OS DNS Response Processing Infinite Loop Denial-of-Service Vulnerability. This vulnerability allows network-adjacent attackers to create a denial-of-service condition on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of DNS responses. The issue results from a logic error that can lead to an infinite loop. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-23392.

Frequently asked questions

What is CVE-2025-2838?: Silicon Labs Gecko OS DNS Response Processing Infinite Loop Denial-of-Service Vulnerability. This vulnerability allows network-adjacent attackers to create a denial-of-service condition on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of DNS responses. The issue results from a logic error that can lead to an infinite loop. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-23392.
How severe is CVE-2025-2838?: CVE-2025-2838 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-2838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-2838?: CVE-2025-2838 affects Silabs Gecko Os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-2838?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-2838 have an EU (EUVD) identifier?: Yes. CVE-2025-2838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8257.
When was CVE-2025-2838 published?: CVE-2025-2838 was published on 2025-03-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:silabs:gecko_os:1.0.46:*:*:*:*:*:*:*

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