CVE-2020-8335
CVE-2020-8335 is a medium-severity vulnerability in Lenovo Thinkpad A275 Firmware with a CVSS 3.x base score of 6.1. 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 6.1)
- CVSS v2: 4.6
- EPSS exploit prediction: 0% (23rd percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Lenovo Thinkpad A275 Firmware
- Published:
- Last modified:
Description
The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access.
Frequently asked questions
- What is CVE-2020-8335?
- The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access.
- How severe is CVE-2020-8335?
- CVE-2020-8335 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
- Is CVE-2020-8335 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-2020-8335?
- CVE-2020-8335 primarily affects Lenovo Thinkpad A275 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-8335?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-8335 published?
- CVE-2020-8335 was published on 2020-09-01 and last updated on 2026-06-17.
References
Affected products (8)
- 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_t495_drift_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:lenovo:thinkpad_t495s_jazz_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:lenovo:thinkpad_x1_carbon_\(20bx\)_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:lenovo:thinkpad_x395_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Lenovo Thinkpad A275 Firmware
- CVE-2019-19705 — High (CVSS 7.8): Realtek Audio Drivers for Windows, as used on the Lenovo ThinkPad X1 Carbon 20A7, 20A8, 20BS, and 20BT before…
- CVE-2019-18619 — High (CVSS 7.8): Incorrect parameter validation in the synaTee component of Synaptics WBF drivers using an SGX enclave (all versions…
- CVE-2019-10724 — Medium (CVSS 6.5): There is a vulnerability with the Dolby DAX2 API system services in which a low-privileged user can terminate arbitrary…
- CVE-2020-8323 — Medium (CVSS 6.4): A potential vulnerability in the SMI callback function used in the Legacy SD driver in some Lenovo ThinkPad,…
- CVE-2020-8320 — Medium (CVSS 6.4): An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.
- CVE-2020-8334 — Medium (CVSS 6.1): The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad T495s, X395, T495, A485, A285, A475, A275…