How severe is CVE-2025-27535?

CVE-2025-27535 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-27535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-27535?

CVE-2025-27535 affects Intel Ethernet Controller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-27535?

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

Does CVE-2025-27535 have an EU (EUVD) identifier?

Yes. CVE-2025-27535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207269.

When was CVE-2025-27535 published?

CVE-2025-27535 was published on 2026-02-10 and last updated on 2026-06-17.

CVE-2025-27535

CVE-2025-27535 is a medium-severity vulnerability in Intel Ethernet Controller with a CVSS 3.x base score of 5.3. 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-782.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 5.6
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207269
Weakness: CWE-782
Affected product: Intel Ethernet Controller
Published: 2026-02-10
Last modified: 2026-06-17

Description

Exposed ioctl with insufficient access control in the firmware for some Intel(R) Ethernet Connection E825-C. before version NVM ver. 3.84 within Ring 0: Bare Metal OS may allow a denial of service. System software adversary with a privileged user combined with a high complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Frequently asked questions

What is CVE-2025-27535?: Exposed ioctl with insufficient access control in the firmware for some Intel(R) Ethernet Connection E825-C. before version NVM ver. 3.84 within Ring 0: Bare Metal OS may allow a denial of service. System software adversary with a privileged user combined with a high complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
How severe is CVE-2025-27535?: CVE-2025-27535 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-27535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-27535?: CVE-2025-27535 affects Intel Ethernet Controller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-27535?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-27535 have an EU (EUVD) identifier?: Yes. CVE-2025-27535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207269.
When was CVE-2025-27535 published?: CVE-2025-27535 was published on 2026-02-10 and last updated on 2026-06-17.

References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01171.html

Affected products (1)

cpe:2.3:a:intel:ethernet_controller:*:*:*:*:*:*:*:*

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