A vulnerability has been identified in a signed kernel driver for the BIOS of some ThinkPad systems that can allow an attacker with Windows administrator-level privileges to call System Management Mode (SMM) services. This could lead to a denial of service attack or allow certain BIOS variables or settings to be altered (such as boot sequence). The setting or changing of BIOS passwords is not affected by this vulnerability.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Thinkpad_10_ella_2_bios | Lenovo | - (including) | - (including) |
| Thinkpad_11e_beema_bios | Lenovo | - (including) | - (including) |
| Thinkpad_11e_braswell_bios | Lenovo | - (including) | - (including) |
| Thinkpad_11e_broadwell_bios | Lenovo | - (including) | - (including) |
| Thinkpad_11e_skylake_bios | Lenovo | - (including) | - (including) |
| Thinkpad_13e_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e450_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e450c_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e455_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e460_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e465_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e550_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e550c_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e555_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e560_bios | Lenovo | - (including) | - (including) |
| Thinkpad_e565_bios | Lenovo | - (including) | - (including) |
| Thinkpad_edge_e440_bios | Lenovo | - (including) | - (including) |
| Thinkpad_edge_e445_bios | Lenovo | - (including) | - (including) |
| Thinkpad_edge_e540_bios | Lenovo | - (including) | - (including) |
| Thinkpad_edge_e545_bios | Lenovo | - (including) | - (including) |
| Thinkpad_helix_20cg_bios | Lenovo | - (including) | - (including) |
| Thinkpad_helix_20ch_bios | Lenovo | - (including) | - (including) |
| Thinkpad_l440_bios | Lenovo | - (including) | - (including) |
| Thinkpad_l450_bios | Lenovo | - (including) | - (including) |
| Thinkpad_l460_bios | Lenovo | - (including) | - (including) |
| Thinkpad_l540_bios | Lenovo | - (including) | - (including) |
| Thinkpad_l560_bios | Lenovo | - (including) | - (including) |
| Thinkpad_p50_bios | Lenovo | - (including) | - (including) |
| Thinkpad_p50s_bios | Lenovo | - (including) | - (including) |
| Thinkpad_p70_bios | Lenovo | - (including) | - (including) |
| Thinkpad_s1_yoga_12_bios | Lenovo | - (including) | - (including) |
| Thinkpad_s1_yoga_non_vpro_bios | Lenovo | - (including) | - (including) |
| Thinkpad_s1_yoga_vpro_bios | Lenovo | - (including) | - (including) |
| Thinkpad_s3_s440_bios | Lenovo | - (including) | - (including) |
| Thinkpad_s3_yoga_14_bios | Lenovo | - (including) | - (including) |
| Thinkpad_s5_e560p_bios | Lenovo | - (including) | - (including) |
| Thinkpad_s5_yoga_15_bios | Lenovo | - (including) | - (including) |
| Thinkpad_s540_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t440_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t440p_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t440s_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t440u_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t450_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t450s_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t460_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t460p_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t460s_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t540_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t540p_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t550_bios | Lenovo | - (including) | - (including) |
| Thinkpad_t560_bios | Lenovo | - (including) | - (including) |
| Thinkpad_tablet_10_bios | Lenovo | - (including) | - (including) |
| Thinkpad_tablet_8_bios | Lenovo | - (including) | - (including) |
| Thinkpad_w540_bios | Lenovo | - (including) | - (including) |
| Thinkpad_w541_bios | Lenovo | - (including) | - (including) |
| Thinkpad_w550s_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x1_carbon_20ax_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x1_carbon_20bx_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x1_carbon_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x1_tablet_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x1_yoga_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x140e_amd_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x240_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x240s_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x250_broadwell_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x250_sharkbay_bios | Lenovo | - (including) | - (including) |
| Thinkpad_x260_bios | Lenovo | - (including) | - (including) |
| Thinkpad_yoga_11e_beema_bios | Lenovo | - (including) | - (including) |
| Thinkpad_yoga_11e_bios | Lenovo | - (including) | - (including) |
| Thinkpad_yoga_11e_braswell_bios | Lenovo | - (including) | - (including) |
| Thinkpad_yoga_11e_broadwell_bios | Lenovo | - (including) | - (including) |
| Thinkpad_yoga_11e_skylake_bios | Lenovo | - (including) | - (including) |
| Thinkpad_yoga_14_460_s3_bios | Lenovo | - (including) | - (including) |
| Thinkpad_yoga_260_s1_bios | Lenovo | - (including) | - (including) |
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: