Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2021-3519

A vulnerability was reported in some Lenovo Desktop models that could allow unauthorized access to the boot menu, when the "BIOS Password At Boot Device List" BIOS setting is Yes.

  • Published: Nov 12, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-3519
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.4
  • AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

CVSS v2:

  • Severity: Medium
  • Score: 6.9
  • AV:L/AC:M/Au:N/C:C/I:C/A:C
Software From Fixed in
lenovo / ideacentre_c5-14mb05_firmware - o4hkt33a
lenovo / ideacentre_3-07imb05_firmware - m2vkt18a
lenovo / ideacentre_5-14imb05_firmware - o4hkt33a
lenovo / ideacentre_5-14iob6_firmware - m3gkt29a
lenovo / ideacentre_creator_5-14iob6_firmware - m3gkt29a
lenovo / ideacentre_g5-14imb05_firmware - o4hkt33a
lenovo / ideacentre_gaming_5-14iob6_firmware - m3gkt29a
lenovo / thinkcentre_m60e_tiny_firmware - m3skt1ea
lenovo / thinkcentre_m630e_firmware - m28kt36a
lenovo / thinkcentre_m70a_firmware - m2skt21a.x
lenovo / thinkcentre_m70s_firmware - m2tkt3ca
lenovo / thinkcentre_m70t_firmware - m2tkt3ca
lenovo / thinkcentre_m710e_firmware - m1zkt37a
lenovo / thinkcentre_m710s_firmware - m16kt67a
lenovo / thinkcentre_m710t_firmware - m16kt67a
lenovo / thinkcentre_m720e_firmware - m30kt23a
lenovo / thinkcentre_m75n_firmware - m33kt21a
lenovo / thinkcentre_m75s_gen_2_firmware - m3bkt24a
lenovo / thinkcentre_m70a_gen_2_firmware - m3nkt17a
lenovo / thinkcentre_m70c_firmware - m2vkt18a
lenovo / thinkcentre_m70q_firmware - m2wkt49a
lenovo / thinkcentre_m75s_gen_2_firmware - m3akt35a
lenovo / thinkcentre_m75t_gen_2_firmware - m3bkt24a
lenovo / thinkcentre_m75t_gen_2_firmware - m3akt35a
lenovo / thinkcentre_m80q_firmware - m2wkt49a
lenovo / thinkcentre_m80s_firmware - m2tkt3ca
lenovo / thinkcentre_m80t_firmware - m2tkt3ca
lenovo / thinkcentre_m810z_firmware - m1ckt47a
lenovo / thinkcentre_m820z_firmware - m1nkt57a
lenovo / thinkcentre_m90a_firmware - m2rkt47a
lenovo / thinkcentre_m90q_tiny_firmware - m2wkt49a
lenovo / thinkcentre_m90s_firmware - m2tkt3ca
lenovo / thinkcentre_m90t_firmware - m2tkt3ca
lenovo / thinkcentre_qt_m410_firmware - m16kt67a
lenovo / thinkcentre_qt_b415_firmware - m16kt67a
lenovo / thinkcentre_qt_m415_firmware - m16kt67a
lenovo / thinkcentre_e75_t/s_firmware - m16kt67a
lenovo / ideacentre_310s-08igm_firmware - m1tkt31a.x
lenovo / ideacentre_510a-15arr_firmware - o4dkt41a.x
lenovo / ideacentre_510s-07icb_firmware - m22kt46a
lenovo / ideacentre_510s-07ick_firmware - m30kt24a
lenovo / ideacentre_510s-07ick_firmware - m30kt23a
lenovo / v30a-22iml_firmware - m37kt26a
lenovo / v330_firmware - m1tkt32a.x
lenovo / v50a-24imb_firmware - m36kt27a
lenovo / v50s-07imb_firmware - m2vkt18a
lenovo / v50a-22imb_firmware - m36kt27a
lenovo / v50t-13imb_firmware - o4hkt33a
lenovo / v50t-13imb_g2_firmware - m3gkt29a
lenovo / v520_firmware - m16kt67a
lenovo / v520s_firmware - m16kt67a
lenovo / v530-15arr_firmware - o4dkt41a.x
lenovo / v530-15icr_firmware - m2ykt29a
lenovo / v530s-07icb_firmware - m30kt23a
lenovo / v530s-07icr_firmware - m30kt23a
lenovo / v55t-15api_firmware - o4dkt41a.x
lenovo / thinkstation_p340_tiny_firmware - m2wkt49a
lenovo / thinkstation_p340_firmware - s08kt3fa
lenovo / thinkstation_p520_firmware - s03kt49a.x
lenovo / thinkstation_p520c_firmware - s03kt49a.x
lenovo / thinkstation_p720_firmware - s04kt54a\/s04kt54p
lenovo / thinkstation_p920_firmware - s04kt54a\/s04kt54p

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.