CVE-2021-33135
CVE-2021-33135 is a medium-severity vulnerability in Intel Software Guard Extensions 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-400.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 2.1
- EPSS exploit prediction: 0% (18th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-400
- Affected product: Intel Software Guard Extensions
- Published:
- Last modified:
Description
Uncontrolled resource consumption in the Linux kernel drivers for Intel(R) SGX may allow an authenticated user to potentially enable denial of service via local access.
Frequently asked questions
- What is CVE-2021-33135?
- Uncontrolled resource consumption in the Linux kernel drivers for Intel(R) SGX may allow an authenticated user to potentially enable denial of service via local access.
- How severe is CVE-2021-33135?
- CVE-2021-33135 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 none, integrity none, and availability high.
- Is CVE-2021-33135 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-33135?
- CVE-2021-33135 affects Intel Software Guard Extensions. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-33135?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-33135 published?
- CVE-2021-33135 was published on 2022-05-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:intel:software_guard_extensions:*:*:*:*:*:linux:*:*
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