CVE-2021-3453
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel...
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.
- Record
CVE-2021-3453- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-693
- Updated
- 2026-11-02
EUVDEUVD-2021-26776
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.
- Record
EUVD-2021-26776- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-rm7h-f39f-xc8f No score
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel...
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.
- Record
GHSA-rm7h-f39f-xc8f- Updated
- 2026-11-02
NVD
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.
- Record
CVE-2021-3453- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-693
- Updated
- 2026-11-02
Affected products
- lenovo bios
- lenovo 730s-13iml firmware
- lenovo ideacentre aio 5-24imb05 firmware
- lenovo ideacentre aio 5-74imb05 firmware
- lenovo ideapad 1-11igl05 firmware
- lenovo ideapad 1-14igl05 firmware
- lenovo ideapad s940-14iil firmware
- lenovo ideapad s940-14iwl firmware
- lenovo ideapad slim 1-11ast-05 firmware
- lenovo ideapad slim 1-14ast-05 firmware
- lenovo thinkpad helix firmware
- lenovo thinkpad t550 firmware
Show 10 moreShow less
- lenovo thinkpad w550s firmware
- lenovo thinkpad x1 carbon 3rd gen firmware
- lenovo thinkpad x250 firmware
- lenovo thinkpad yoga 15 firmware
- lenovo v130-15igm firmware
- lenovo v330-15ikb firmware
- lenovo v330-15isk firmware
- lenovo yoga s730-13iml firmware
- lenovo yoga s940-14iil firmware
- lenovo yoga s940-14iwl firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3453 is a medium vulnerability (CVSS 6.8) in Lenovo Bios, published July 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 14th percentile. No source names a fixed version.