Is CVE-2023-22655 in the CISA KEV catalog?

No. CVE-2023-22655 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-22655?

CVE-2023-22655 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2023-22655?

CVE-2023-22655 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-22655?

Upgrade intel-microcode on debian 11 to 3.20240312.1~deb11u1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2023-22655

MEDIUM

6.1

CVSS v3

NVD

Description

Protection mechanism failure in some 3rd and 4th Generation Intel(R) Xeon(R) Processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.

CWE-693Protection Mechanism Failure

How to fix

Remediation Available

intel-microcodeDebian

Fixed in:3.20240312.1~deb11u1CVE-2023-22655

Fixed in:3.20240312.1~deb12u1CVE-2023-22655

Fixed in:3.20240312.1CVE-2023-22655

microcode_ctlRocky

Fixed in:4:20230808-2.20240531.1.el9_4RHEA-2024:7620

Fixed in:4:20240910-1.el9_5RHSA-2024:9401

microcode_ctlRed Hat / RHEL

Fixed in:4:20230808-2.20240531.1.el9_4RHEA-2024:7620

Fixed in:4:20240910-1.el9_5RHSA-2024:9401

Fixed in:4:20230808-2.20240531.1.el9_4RHEA-2024:7620

intel-microcodeUbuntu

Fixed in:3.20240514.0ubuntu0.16.04.1+esm1USN-6797-1

Fixed in:3.20240514.0ubuntu0.18.04.1+esm1USN-6797-1

Fixed in:3.20240514.0ubuntu0.20.04.1USN-6797-1

Fixed in:3.20240514.0ubuntu0.22.04.1USN-6797-1

Fixed in:3.20240514.0ubuntu0.23.10.1USN-6797-1

Fixed in:3.20240514.0ubuntu0.24.04.1USN-6797-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:N

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-693 (Protection Mechanism Failure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2465	Critical	9.8	99%	KEV + Ransom	-
CVE-2024-21412	High	8.1	95%	KEV + Ransom	Fix
CVE-2013-0431	Medium	5.3	90%	KEV + Ransom	-
CVE-2025-40536	High	8.1	82%	KEV	Fix
CVE-2019-1003030	Critical	9.9	76%	KEV	-
CVE-2025-0411	High	7.0	67%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.