How severe is CVE-2020-8320?

CVE-2020-8320 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over physical access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-8320 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8320?

CVE-2020-8320 primarily affects Lenovo Thinkpad 11e Yoga Gen 6 Firmware. In total, 100 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-8320?

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

When was CVE-2020-8320 published?

CVE-2020-8320 was published on 2020-06-09 and last updated on 2026-06-17.

CVE-2020-8320

CVE-2020-8320 is a medium-severity vulnerability in Lenovo Thinkpad 11e Yoga Gen 6 Firmware with a CVSS 3.x base score of 6.4. 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-269.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v2: 4.6
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Lenovo Thinkpad 11e Yoga Gen 6 Firmware
Published: 2020-06-09
Last modified: 2026-06-17

Description

An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.

Frequently asked questions

What is CVE-2020-8320?: An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.
How severe is CVE-2020-8320?: CVE-2020-8320 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over physical access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-8320 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8320?: CVE-2020-8320 primarily affects Lenovo Thinkpad 11e Yoga Gen 6 Firmware. In total, 100 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-8320?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-8320 published?: CVE-2020-8320 was published on 2020-06-09 and last updated on 2026-06-17.

References

https://support.lenovo.com/us/en/product_security/LEN-30042

Affected products (100)

cpe:2.3:o:lenovo:thinkpad_11e_yoga_gen_6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_11e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_yoga_11e_3rd_gen_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_yoga_11e_4th_gen_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_yoga_11e_5th_gen_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_13_2nd_gen_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_13_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_a275_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_a285_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_a475_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_a485_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e14_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e15_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_r14_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_s3_gen_2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e455_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e555_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e460_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e560_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e465_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e565_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e470_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e475_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e575_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e480_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e580_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e485_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e585_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e490s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_s3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e490_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e590_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_r490_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_r590_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_l13_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_l1415_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_l380_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_s3_3rd_gen_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_l380_yoga_firmware:*:*:*:*:*:*:*:*

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