How severe is CVE-2020-12327?

CVE-2020-12327 has a CVSS 3.x base score of 4.4, 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 none, and availability none.

Is CVE-2020-12327 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12327?

CVE-2020-12327 affects Intel Thunderbolt Dch Driver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12327?

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

When was CVE-2020-12327 published?

CVE-2020-12327 was published on 2020-11-12 and last updated on 2026-06-17.

CVE-2020-12327

CVE-2020-12327 is a medium-severity vulnerability in Intel Thunderbolt Dch Driver with a CVSS 3.x base score of 4.4. 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-1188.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 2.1
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1188
Affected product: Intel Thunderbolt Dch Driver
Published: 2020-11-12
Last modified: 2026-06-17

Description

Insecure default variable initialization in some Intel(R) Thunderbolt(TM) DCH drivers for Windows* before version 72 may allow a privileged user to potentially enable information disclosure via local access.

Frequently asked questions

What is CVE-2020-12327?: Insecure default variable initialization in some Intel(R) Thunderbolt(TM) DCH drivers for Windows* before version 72 may allow a privileged user to potentially enable information disclosure via local access.
How severe is CVE-2020-12327?: CVE-2020-12327 has a CVSS 3.x base score of 4.4, 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 none, and availability none.
Is CVE-2020-12327 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12327?: CVE-2020-12327 affects Intel Thunderbolt Dch Driver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12327?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12327 published?: CVE-2020-12327 was published on 2020-11-12 and last updated on 2026-06-17.

References

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00422

Affected products (1)

cpe:2.3:a:intel:thunderbolt_dch_driver:*:*:*:*:*:windows:*:*

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