Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2021-3786

A potential vulnerability in the SMI callback function used in CSME configuration of some Lenovo Notebook and ThinkPad systems could be used to leak out data out of the SMRAM range.

  • Published: Nov 12, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-3786
  • Severity: Low
  • Exploit:

CVSS v3:

  • Severity: Low
  • Score: 4.4
  • AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 2.1
  • AV:L/AC:L/Au:N/C:P/I:N/A:N

CWEs:

Software From Fixed in
lenovo / thinkpad_x380_yoga_firmware - 2020-10-31
lenovo / thinkpad_x1_fold_gen_1_firmware - 2021-10-29
lenovo / thinkpad_yoga_260_firmware - 2021-10-25
lenovo / thinkpad_yoga_11e_3rd_gen_firmware - 2021-10-31
lenovo / thinkpad_yoga_15_firmware - n19et66w
lenovo / thinkpad_yoga_370_firmware - 2021-10-31
lenovo / thinkpad_x12_detachable_gen_1_firmware - 2021-10-31
lenovo / thinkpad_x390_firmware - n2jet96w
lenovo / thinkpad_yoga_11e_4th_gen_firmware - 2021-10-31
lenovo / thinkpad_yoga_11e_5th_gen_firmware - 2021-10-31
lenovo / thinkpad_x250_firmware - 2021-10-31
lenovo / thinkpad_x260_firmware - 2021-10-31
lenovo / thinkpad_x390_yoga_firmware - n2let87w
lenovo / thinkpad_x280_firmware - n20et58w
lenovo / thinkpad_x1_titanium_firmware - n2met51w
lenovo / thinkpad_x270_firmware - 2021-10-29
lenovo / thinkpad_x1_carbon_5th_gen_kabylake_firmware - n1met66w
lenovo / thinkpad_x13_gen_1_firmware - n2yet31w
lenovo / thinkpad_x13_gen_2_firmware - n35et41w
lenovo / thinkpad_x13_yoga_gen_1_firmware - n2uet56w
lenovo / thinkpad_x13_yoga_gen_2_firmware - n39et47w
lenovo / thinkpad_x1_carbon_5th_gen_skylake_firmware - n1met66w
lenovo / thinkpad_x1_yoga_1st_gen_firmware - n1fet76w
lenovo / thinkpad_x1_yoga_3rd_gen_firmware - n25et57w
lenovo / thinkpad_x1_yoga_4th_gen_firmware - n2het64w
lenovo / thinkpad_x1_yoga_gen_5_firmware - n2wet30w
lenovo / thinkpad_x1_carbon_4th_gen_firmware - n1fet76w
lenovo / thinkpad_10_firmware - 2021-10-25
lenovo / thinkpad_x1_nano_gen_1_firmware - n2tet67w
lenovo / thinkpad_x1_extreme_firmware - n2eet54w
lenovo / thinkpad_x1_extreme_2nd_firmware - n2oet53w
lenovo / thinkpad_x1_extreme_gen_3_firmware - n2vet33w
lenovo / thinkpad_t460s_firmware - n1cet84w
lenovo / thinkpad_s2_gen_6_firmware - 2021-10-31
lenovo / thinkpad_x1_carbon_gen_6_firmware - n23et78w
lenovo / thinkpad_x1_carbon_gen_7_firmware - n2het64w
lenovo / thinkpad_x1_carbon_gen_8_firmware - n2het64w
lenovo / thinkpad_t560_firmware - n1ket52w
lenovo / thinkpad_t460p_firmware - 2021-10-29
lenovo / thinkpad_w550s_firmware - n11et54w
lenovo / thinkpad_t590_firmware - n2iet96w
lenovo / thinkpad_t570_firmware - n1vet57w
lenovo / thinkpad_s2_yoga_gen_6_firmware - 2021-10-31
lenovo / thinkpad_t480_firmware - n24et65w
lenovo / thinkpad_x1_tablet_firmware - n1let92w
lenovo / thinkpad_t550_firmware - n11et54w
lenovo / thinkpad_x1_carbon_3rd_gen_firmware - n14et56w
lenovo / thinkpad_x1_tablet_gen_2_firmware - n1oet56w
lenovo / thinkpad_x1_tablet_gen_3_firmware - 2021-10-29
lenovo / thinkpad_t580_firmware - n27et43w
lenovo / thinkpad_t480s_firmware - n22et70w
lenovo / thinkpad_t15_firmware - n2xet32w
lenovo / thinkpad_t460_firmware - 2021-10-31
lenovo / thinkpad_t470_firmware - n1qet92w
lenovo / thinkpad_t490_firmware - n2iet96w
lenovo / thinkpad_t490s_firmware - n2iet96w
lenovo / thinkpad_t14s_gen_2_firmware - n35et41w
lenovo / thinkpad_t14s_firmware - 2021-10-15
lenovo / thinkpad_t470p_firmware - r0fet55w
lenovo / thinkpad_t470s_firmware - 2021-10-29
lenovo / thinkpad_p71_firmware - 2021-10-29
lenovo / thinkpad_t440p_firmware - 2021-10-29
lenovo / thinkpad_t15_gen_2_firmware - n34et42w
lenovo / thinkpad_t15p_gen_1_firmware - 2021-10-29
lenovo / thinkpad_p70_firmware - n1detb2w
lenovo / thinkpad_t15g_gen_1_firmware - 2021-10-29
lenovo / thinkpad_t14_gen_1_firmware - n2xet32w
lenovo / thinkpad_t14_gen_2_firmware - n34et42w
lenovo / thinkpad_p73_firmware - n2net47w
lenovo / thinkpad_s540_firmware - 2021-10-25
lenovo / thinkpad_p72_firmware - n2cet60w
lenovo / thinkpad_l380_firmware - 2021-10-31
lenovo / thinkpad_s5_2nd_gen_firmware - 2021-10-31
lenovo / thinkpad_p15v_gen_1_firmware - 2021-10-29
lenovo / thinkpad_p53_firmware - n2net47w
lenovo / thinkpad_p53s_firmware - n2iet96w
lenovo / thinkpad_p43s_firmware - n2iet96w
lenovo / thinkpad_p51_firmware - n1uet82w
lenovo / thinkpad_p51s_firmware - n1vet57w
lenovo / thinkpad_p50_firmware - n1eet92w
lenovo / thinkpad_p52_firmware - n2cet60w
lenovo / thinkpad_p52s_firmware - n27et43w
lenovo / thinkpad_p50s_firmware - n1ket52w
lenovo / thinkpad_l570_firmware - n1xet74w
lenovo / thinkpad_p17_gen_1_firmware - 2021-10-29
lenovo / thinkpad_l580_firmware - 2021-10-15
lenovo / thinkpad_p14s_gen_1_firmware - n2xet32w
lenovo / thinkpad_p14s_gen_2_firmware - n34et42w
lenovo / thinkpad_p15_gen_1_firmware - 2021-10-29
lenovo / thinkpad_p15s_gen_1_firmware - n2xet32w
lenovo / thinkpad_p15s_gen_2_firmware - n34et42w
lenovo / thinkpad_l590_firmware - 2021-10-15
lenovo / thinkpad_l380_yoga_firmware - 2021-10-31
lenovo / thinkpad_l490_firmware - 2021-10-15
lenovo / thinkpad_l560_firmware - n1het92w
lenovo / thinkpad_p1_firmware - n2eet54w
lenovo / thinkpad_p1_gen_2_firmware - n2oet53w
lenovo / thinkpad_p1_gen_3_firmware - n2vet33w
lenovo / thinkpad_l480_firmware - 2021-10-15
lenovo / thinkpad_l470_firmware - 2021-10-15
lenovo / thinkpad_l460_firmware - 2021-10-15
lenovo / thinkpad_e490_firmware - 2021-10-15
lenovo / thinkpad_helix_firmware - n17etb6w
lenovo / thinkpad_l390_firmware - 2021-10-31
lenovo / thinkpad_l390_yoga_firmware - 2021-10-31
lenovo / thinkpad_e15_gen_3_firmware - 2021-10-15
lenovo / thinkpad_l14_firmware - 2021-10-15
lenovo / thinkpad_l13_gen_2_firmware - 2021-10-31
lenovo / thinkpad_l15_firmware - 2021-10-15
lenovo / thinkpad_l15_gen_2_firmware - 2021-10-15
lenovo / thinkpad_l13_firmware - 2021-10-31
lenovo / thinkpad_e14_gen_3_firmware - 2021-10-15
lenovo / thinkpad_e590_firmware - 2021-10-15
lenovo / thinkpad_e580_firmware - 2021-10-15
lenovo / thinkpad_l13_yoga_gen_2_firmware - 2021-10-31
lenovo / thinkpad_e570_firmware - 2021-10-15
lenovo / thinkpad_l13_yoga_firmware - 2021-10-31
lenovo / thinkpad_11e_3rd_gen_firmware - 2021-10-31
lenovo / thinkpad_e480_firmware - 2021-10-15
lenovo / thinkpad_e14_firmware - 2021-10-15.x
lenovo / thinkpad_e470_firmware - 2021-10-15
lenovo / thinkpad_e15_firmware - 2021-10-15
lenovo / thinkpad_e15_gen_2_firmware - 2021-10-15
lenovo / thinkpad_25_firmware - n1qet92w
lenovo / thinkpad_e14_gen_2_firmware - 2021-10-15
lenovo / thinkpad_13_gen_2_firmware - 2021-10-31
lenovo / thinkpad_11e_4th_gen_firmware - 2021-10-31
lenovo / thinkpad_11e_yoga_gen_6_firmware - 2021-10-31
lenovo / ideapad_s940-14iwl_firmware - 12.0.81.1753.x
lenovo / ideapad_yoga_s940-14iwl_firmware - 12.0.81.1753.x
lenovo / v330-15isk_firmware - 11.8.86.3877.x
lenovo / v330-15ikb_firmware - 11.8.86.3877.x
lenovo / v130-15igm_firmware - 6vcn42ww.x
lenovo / thinkpad_x1_yoga_4th_gen_firmware - n2qet42w
lenovo / thinkpad_x1_carbon_gen_7_firmware - n2qet42w
lenovo / thinkpad_x1_carbon_gen_8_firmware - n2qet42w

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.