How severe is CVE-2020-8333?

CVE-2020-8333 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-8333 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8333?

CVE-2020-8333 primarily affects Lenovo 63 Firmware. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-8333?

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

When was CVE-2020-8333 published?

CVE-2020-8333 was published on 2020-09-24 and last updated on 2026-06-17.

CVE-2020-8333

CVE-2020-8333 is a medium-severity vulnerability in Lenovo 63 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.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v2: 7.2
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Lenovo 63 Firmware
Published: 2020-09-24
Last modified: 2026-06-17

Description

A potential vulnerability in the SMI callback function used in the EEPROM driver in some Lenovo Desktops and ThinkStation models may allow arbitrary code execution

Frequently asked questions

What is CVE-2020-8333?: A potential vulnerability in the SMI callback function used in the EEPROM driver in some Lenovo Desktops and ThinkStation models may allow arbitrary code execution
How severe is CVE-2020-8333?: CVE-2020-8333 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-8333 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8333?: CVE-2020-8333 primarily affects Lenovo 63 Firmware. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-8333?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-8333 published?: CVE-2020-8333 was published on 2020-09-24 and last updated on 2026-06-17.

References

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

Affected products (27)

cpe:2.3:o:lenovo:63_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:h50-30g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:m4500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:m4550_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:qitian_4500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:qitian_b4550_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:qitian_m4550_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_e73_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_e73s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_e93_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m4500k_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m4500q_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m4500t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m4500s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yangtian_afh81_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yangtian_mc_h81_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yangtian_mf_h81_pci_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yangtian_wf_h81_pci_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yangtian_tc_h81_pci_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yangtian_wcc_h81_pci_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m9350z_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m93z_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkstation_c30_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkstation_d30_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkstation_e32_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkstation_p300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkstation_s30_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Lenovo 63 Firmware

CVE-2019-6188 — Critical (CVSS 9.8): The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad T460p, BIOS versions up to R07ET90W, and…
CVE-2017-3753 — Medium (CVSS 6.8): A vulnerability has been identified in some Lenovo products that use UEFI (BIOS) code developed by American Megatrends,…
CVE-2019-6172 — Medium (CVSS 6.4): A potential vulnerability in the SMI callback function used in Legacy USB driver using passed parameter without…
CVE-2019-6170 — Medium (CVSS 6.4): A potential vulnerability in the SMI callback function used in the Legacy USB driver using boot services structure in…

All CVEs affecting Lenovo 63 Firmware →