How severe is CVE-2021-0003?

CVE-2021-0003 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-0003 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0003?

CVE-2021-0003 affects Intel Ethernet Controller E810 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0003?

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

When was CVE-2021-0003 published?

CVE-2021-0003 was published on 2021-08-11 and last updated on 2026-06-17.

CVE-2021-0003

CVE-2021-0003 is a medium-severity vulnerability in Intel Ethernet Controller E810 Firmware with a CVSS 3.x base score of 5.5. 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-755.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Intel Ethernet Controller E810 Firmware
Published: 2021-08-11
Last modified: 2026-06-17

Description

Improper conditions check in some Intel(R) Ethernet Controllers 800 series Linux drivers before version 1.4.11 may allow an authenticated user to potentially enable information disclosure via local access.

Frequently asked questions

What is CVE-2021-0003?: Improper conditions check in some Intel(R) Ethernet Controllers 800 series Linux drivers before version 1.4.11 may allow an authenticated user to potentially enable information disclosure via local access.
How severe is CVE-2021-0003?: CVE-2021-0003 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-0003 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0003?: CVE-2021-0003 affects Intel Ethernet Controller E810 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0003?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0003 published?: CVE-2021-0003 was published on 2021-08-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:intel:ethernet_controller_e810_firmware:*:*:*:*:*:linux:*:*

More vulnerabilities in Intel Ethernet Controller E810 Firmware

CVE-2021-0084 — High (CVSS 7.8): Improper input validation in the Intel(R) Ethernet Controllers X722 and 800 series Linux RMDA driver before version…
CVE-2021-0002 — High (CVSS 7.1): Improper conditions check in some Intel(R) Ethernet Controllers 800 series Linux drivers before version 1.4.11 may…
CVE-2021-0009 — Medium (CVSS 6.5): Out-of-bounds read in the firmware for Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters before…
CVE-2022-28709 — Medium (CVSS 4.4): Improper access control in the firmware for some Intel(R) E810 Ethernet Controllers before version 1.6.1.9 may allow a…
CVE-2021-33128 — Medium (CVSS 4.4): Improper access control in the firmware for some Intel(R) E810 Ethernet Controllers before version 1.6.0.6 may allow a…
CVE-2021-0008 — Medium (CVSS 4.4): Uncontrolled resource consumption in firmware for Intel(R) Ethernet Adapters 800 Series Controllers and associated…

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CVE-2021-42142 — Critical (CVSS 9.8): An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a…
CVE-2021-42141 — Critical (CVSS 9.8): An issue was discovered in Contiki-NG tinyDTLS through 2018-08-30. One incorrect handshake could complete with…
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