Improper input validation in Lenovo ThinkPad BIOS
Priority LOW 29CWE-20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.
Why it matters now
EPSS 0.00279 20th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Lenovo | ThinkPad BIOS | various | — | No fix listed | CNA |
- ThinkPad BIOS VendorLenovo Affected various Fixed in — No fix listed CNA
CPE configurations NVD · 62
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:lenovo:thinkpad_11e_3rd_gen_firmware:*:*:*:*:braswell:*:*:* | up to 1.22 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_11e_3rd_gen:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_11e_3rd_gen_firmware:*:*:*:*:skylate:*:*:* | up to 1.29 | Vulnerable | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_11e_4th_gen_i3_firmware:*:*:*:*:*:*:*:* | up to 1.22 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_11e_4th_gen_i3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_11e_4th_gen_i7_firmware:*:*:*:*:*:*:*:* | up to 1.22 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_11e_4th_gen_i7:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_11e_4th_gen_i5_firmware:*:*:*:*:*:*:*:* | up to 1.22 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_11e_4th_gen_i5:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_11e_4th_gen_celeron_firmware:*:*:*:*:*:*:*:* | up to 1.27 | Vulnerable | Lenovo |
- cpe:2.3:o:lenovo:thinkpad_11e_3rd_gen_firmware:*:*:*:*:braswell:*:*:* Versions up to 1.22 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_11e_3rd_gen:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_11e_3rd_gen_firmware:*:*:*:*:skylate:*:*:* Versions up to 1.29 Vulnerable ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_11e_4th_gen_i3_firmware:*:*:*:*:*:*:*:* Versions up to 1.22 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_11e_4th_gen_i3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_11e_4th_gen_i7_firmware:*:*:*:*:*:*:*:* Versions up to 1.22 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_11e_4th_gen_i7:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_11e_4th_gen_i5_firmware:*:*:*:*:*:*:*:* Versions up to 1.22 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_11e_4th_gen_i5:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_11e_4th_gen_celeron_firmware:*:*:*:*:*:*:*:* Versions up to 1.27 Vulnerable ·Lenovo
Show 52 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:lenovo:thinkpad_11e_4th_gen_celeron:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_11e_yoga_gen_6_firmware:*:*:*:*:*:*:*:* | up to 1.12 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_11e_yoga_gen_6:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_13_gen_2_firmware:*:*:*:*:*:*:*:* | up to 1.29 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_13_gen_2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l13_firmware:*:*:*:*:*:*:*:* | up to 1.31 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l13:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l13_gen_2_firmware:*:*:*:*:non-vpro:*:*:* | up to 1.11 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l13_gen_2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l13_gen_2_firmware:*:*:*:*:vpro:*:*:* | up to 1.08 | Vulnerable | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l13_yoga_firmware:*:*:*:*:*:*:*:* | up to 1.31 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l13_yoga:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l13_yoga_gen_2_firmware:*:*:*:*:non-vpro:*:*:* | up to 1.11 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l13_yoga_gen_2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l13_yoga_gen_2_firmware:*:*:*:*:vpro:*:*:* | up to 1.08 | Vulnerable | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l14_gen_1_firmware:*:*:*:*:*:*:*:* | before 1.15 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l14_gen_1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l14_firmware:*:*:*:*:*:*:*:* | before 1.20.1.17 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l14:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l15_gen_1_firmware:*:*:*:*:*:*:*:* | before 1.15 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l15_gen_1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l15_firmware:*:*:*:*:*:*:*:* | before 1.20.1.17 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l15:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l380_firmware:*:*:*:*:*:*:*:* | up to 1.26 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l380:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l380_yoga_firmware:*:*:*:*:*:*:*:* | up to 1.26 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l380_yoga:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l390_yoga_firmware:*:*:*:*:*:*:*:* | up to 1.35 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l390_yoga:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_l390_firmware:*:*:*:*:*:*:*:* | up to 1.35 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_l390:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_s5_2nd_gen_firmware:*:*:*:*:*:*:*:* | up to 1.28 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_s5_2nd_gen:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_t460_firmware:*:*:*:*:*:*:*:* | up to 1.43.1.11 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_t460:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_s2_gen_6_firmware:*:*:*:*:*:*:*:* | up to 2021-09-30 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_s2_gen_6:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_s2_yoga_gen_6_firmware:*:*:*:*:*:*:*:* | up to 2021-09-30 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_s2_yoga_gen_6:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_x12_detachable_gen_1_firmware:*:*:*:*:*:*:*:* | before 1.16 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_x12_detachable_gen_1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_x260_firmware:*:*:*:*:*:*:*:* | up to 1.47\/1.15 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_x260:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_x380_yoga_firmware:*:*:*:*:*:*:*:* | up to 1.34 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_x380_yoga:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_x390_yoga_firmware:*:*:*:*:*:*:*:* | before n2let87w | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_x390_yoga:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_11e_5th_gen_firmware:*:*:*:*:*:*:*:* | up to 1.13 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_11e_5th_gen:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_yoga_370:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:thinkpad_x1_fold_gen_1_firmware:*:*:*:*:*:*:*:* | before n2pet50w | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:thinkpad_x1_fold_gen_1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
- cpe:2.3:h:lenovo:thinkpad_11e_4th_gen_celeron:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_11e_yoga_gen_6_firmware:*:*:*:*:*:*:*:* Versions up to 1.12 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_11e_yoga_gen_6:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_13_gen_2_firmware:*:*:*:*:*:*:*:* Versions up to 1.29 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_13_gen_2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l13_firmware:*:*:*:*:*:*:*:* Versions up to 1.31 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l13:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l13_gen_2_firmware:*:*:*:*:non-vpro:*:*:* Versions up to 1.11 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l13_gen_2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l13_gen_2_firmware:*:*:*:*:vpro:*:*:* Versions up to 1.08 Vulnerable ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l13_yoga_firmware:*:*:*:*:*:*:*:* Versions up to 1.31 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l13_yoga:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l13_yoga_gen_2_firmware:*:*:*:*:non-vpro:*:*:* Versions up to 1.11 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l13_yoga_gen_2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l13_yoga_gen_2_firmware:*:*:*:*:vpro:*:*:* Versions up to 1.08 Vulnerable ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l14_gen_1_firmware:*:*:*:*:*:*:*:* Versions before 1.15 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l14_gen_1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l14_firmware:*:*:*:*:*:*:*:* Versions before 1.20.1.17 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l14:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l15_gen_1_firmware:*:*:*:*:*:*:*:* Versions before 1.15 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l15_gen_1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l15_firmware:*:*:*:*:*:*:*:* Versions before 1.20.1.17 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l15:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l380_firmware:*:*:*:*:*:*:*:* Versions up to 1.26 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l380:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l380_yoga_firmware:*:*:*:*:*:*:*:* Versions up to 1.26 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l380_yoga:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l390_yoga_firmware:*:*:*:*:*:*:*:* Versions up to 1.35 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l390_yoga:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_l390_firmware:*:*:*:*:*:*:*:* Versions up to 1.35 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_l390:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_s5_2nd_gen_firmware:*:*:*:*:*:*:*:* Versions up to 1.28 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_s5_2nd_gen:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_t460_firmware:*:*:*:*:*:*:*:* Versions up to 1.43.1.11 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_t460:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_s2_gen_6_firmware:*:*:*:*:*:*:*:* Versions up to 2021-09-30 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_s2_gen_6:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_s2_yoga_gen_6_firmware:*:*:*:*:*:*:*:* Versions up to 2021-09-30 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_s2_yoga_gen_6:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_x12_detachable_gen_1_firmware:*:*:*:*:*:*:*:* Versions before 1.16 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_x12_detachable_gen_1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_x260_firmware:*:*:*:*:*:*:*:* Versions up to 1.47\/1.15 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_x260:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_x380_yoga_firmware:*:*:*:*:*:*:*:* Versions up to 1.34 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_x380_yoga:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_x390_yoga_firmware:*:*:*:*:*:*:*:* Versions before n2let87w Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_x390_yoga:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_11e_5th_gen_firmware:*:*:*:*:*:*:*:* Versions up to 1.13 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_11e_5th_gen:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_yoga_370:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:thinkpad_x1_fold_gen_1_firmware:*:*:*:*:*:*:*:* Versions before n2pet50w Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:thinkpad_x1_fold_gen_1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3843
- 2026-10-03 Alias added: GHSA-jv7h-3pw9-7qjw
References
More Lenovo Thinkpad 11e 3rd Gen Firmware vulnerabilities
- TI-2021-02546 Improper input validation in Lenovo ThinkPad BIOS CVSS 3.1MEDIUM 6.7
- TI-2021-02717 Improper input validation in Lenovo Notebook and ThinkPad BIOS CVSS 3.1MEDIUM 5.5
- TI-2021-02652 A denial of service vulnerability was reported in some ThinkPad models that could cause a… CVSS 3.1MEDIUM 4.6
Sources
- CVE-2021-3843 · CVE Program
- CVE-2021-3843 · NVD
- FIRST EPSS
- GHSA-jv7h-3pw9-7qjw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences