How severe is CVE-2021-0186?

CVE-2021-0186 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-0186 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-2021-0186?

CVE-2021-0186 primarily affects Intel Sgx Sdk. In total, 184 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-0186?

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

When was CVE-2021-0186 published?

CVE-2021-0186 was published on 2021-11-17 and last updated on 2026-06-17.

CVE-2021-0186

CVE-2021-0186 is a medium-severity vulnerability in Intel Sgx Sdk with a CVSS 3.x base score of 6.7. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 4.6
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Intel Sgx Sdk
Published: 2021-11-17
Last modified: 2026-06-17

Description

Improper input validation in the Intel(R) SGX SDK applications compiled for SGX2 enabled processors may allow a privileged user to potentially escalation of privilege via local access.

Frequently asked questions

What is CVE-2021-0186?: Improper input validation in the Intel(R) SGX SDK applications compiled for SGX2 enabled processors may allow a privileged user to potentially escalation of privilege via local access.
How severe is CVE-2021-0186?: CVE-2021-0186 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-0186 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-2021-0186?: CVE-2021-0186 primarily affects Intel Sgx Sdk. In total, 184 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-0186?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0186 published?: CVE-2021-0186 was published on 2021-11-17 and last updated on 2026-06-17.

References

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00548.html

Affected products (184)

cpe:2.3:a:intel:sgx_sdk:*:*:*:*:*:linux:*:*
cpe:2.3:a:intel:sgx_sdk:*:*:*:*:*:windows:*:*
cpe:2.3:o:intel:xeon_gold_6342_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6346_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6330_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8360y_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6354_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6314u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6338n_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_silver_4314_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_silver_4316_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_5318y_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_5317_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6334_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6326_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_silver_4309y_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6348_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_silver_4310_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6338t_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_5318s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6336y_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_5318n_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6312u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_silver_4310t_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_5320t_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_5320_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_5315y_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8352m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8362_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8368_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8358_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8352y_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6338_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_gold_6330n_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8380_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8351n_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8368q_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8352s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8358p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_platinum_8352v_firmware:-:*:*:*:*:*:*:*

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