How severe is CVE-2021-0133?

CVE-2021-0133 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-0133 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0133?

CVE-2021-0133 affects Intel Secl-dc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0133?

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.

When was CVE-2021-0133 published?

CVE-2021-0133 was published on 2021-06-09 and last updated on 2026-06-17.

CVE-2021-0133

CVE-2021-0133 is a high-severity vulnerability in Intel Secl-dc with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Intel Secl-dc
Published: 2021-06-09
Last modified: 2026-06-17

Description

Key exchange without entity authentication in the Intel(R) Security Library before version 3.3 may allow an authenticated user to potentially enable escalation of privilege via network access.

Frequently asked questions

What is CVE-2021-0133?: Key exchange without entity authentication in the Intel(R) Security Library before version 3.3 may allow an authenticated user to potentially enable escalation of privilege via network access.
How severe is CVE-2021-0133?: CVE-2021-0133 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-0133 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0133?: CVE-2021-0133 affects Intel Secl-dc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0133?: 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.
When was CVE-2021-0133 published?: CVE-2021-0133 was published on 2021-06-09 and last updated on 2026-06-17.

References

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00521.html

Affected products (1)

cpe:2.3:o:intel:secl-dc:*:*:*:*:*:*:*:*

More vulnerabilities in Intel Secl-dc

CVE-2021-0131 — Medium (CVSS 6.5): Use of cryptographically weak pseudo-random number generator (PRNG) in an API for the Intel(R) Security Library before…
CVE-2021-0134 — Medium (CVSS 4.9): Improper input validation in an API for the Intel(R) Security Library before version 3.3 may allow a privileged user to…
CVE-2021-0132 — Medium (CVSS 4.9): Missing release of resource after effective lifetime in an API for the Intel(R) Security Library before version 3.3 may…

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