high
7.5
CWE
787 121 119
Advisory Published
Updated

CVE-2021-21574: Buffer Overflow

First published: Thu Jun 24 2021(Updated: )

Dell BIOSConnect feature contains a buffer overflow vulnerability. An authenticated malicious admin user with local access to the system may potentially exploit this vulnerability to run arbitrary code and bypass UEFI restrictions.

Credit: security_alert@emc.com

Affected SoftwareAffected VersionHow to fix
Dell alienware m15 r6 firmware<1.3.3
Dell Alienware M15 R6
Dell chengming 3990 firmware<1.4.1
Dell chengming 3990
Dell chengming 3991 firmware<1.4.1
Dell chengming 3991
Dell G15 5510 Firmware<1.4.0
Dell G15 5510 Firmware
Dell G15 5511<1.3.3
Dell G15 5511 Firmware
Dell G3 3500 Firmware<=1.9.0
Dell G3 3500 Firmware
Dell G5 5500 Firmware<1.9.0
Dell G5 5500
Dell G7 7500 Firmware<1.9.0
Dell G7 7500 Firmware
Dell G7 7700 Firmware<1.9.0
Dell G7 7700 Firmware
Dell inspiron 14 5418 firmware<2.1.0_a06
Dell inspiron 14 5418
Dell inspiron 15 5518 firmware<2.1.0_a06
Dell inspiron 15 5518
Dell inspiron 15 7510 firmware<1.0.4
Dell Inspiron 15 7510
Dell inspiron 3501 firmware<1.6.0
Dell inspiron 3501
Dell Inspiron 3880 Firmware<1.4.1
Dell Inspiron 3880 Firmware
Dell Inspiron 3881<1.4.1
Dell Inspiron 3881
Dell Inspiron 3891 Firmware<1.0.11
Dell Inspiron 3891
Dell Inspiron 5300 Firmware<1.7.1
Dell Inspiron 5300 Firmware
Dell Inspiron 5301 Firmware<1.8.1
Dell Inspiron 5301 Firmware
Dell Inspiron 5310 Firmware<2.1.0
Dell Inspiron 5310
Dell Inspiron 5400 2-in-1 Firmware<1.7.0
Dell Inspiron 5400 2-in-1
Dell Inspiron 5400 AIO Firmware<1.4.0
Dell Inspiron 5400 AIO
Dell Inspiron 5401 AIO Firmware<1.7.2
Dell Inspiron 5401
Dell Inspiron 5401 AIO Firmware<1.4.0
Dell Inspiron 5401 AIO
Dell Inspiron 5402 Firmware<1.5.1
Dell Inspiron 5402
Dell Inspiron 5406 2-in-1 Firmware<1.5.1
Dell Inspiron 5406 2-in-1
Dell Inspiron 5408 Firmware<1.7.2
Dell Inspiron 5408 Firmware
Dell Inspiron 5409 Firmware<1.5.1
Dell Inspiron 5409 Firmware
Dell Inspiron 5410 2-in-1 firmware<2.1.0
Dell Inspiron 5410
Dell Inspiron 5501 Firmware<1.7.2
Dell Inspiron 5501
Dell Inspiron 5502 Firmware<1.5.1
Dell Inspiron 5502
Dell Inspiron 5508 Firmware<1.7.2
Dell Inspiron 5508 Firmware
Dell Inspiron 5509 Firmware<1.5.1
Dell Inspiron 5509
Dell Inspiron 7300 Firmware<1.8.1
Dell Inspiron 7300
Dell Inspiron 7300 2-in-1 Firmware<1.3.0
Dell Inspiron 7300
Dell Inspiron 7306 2-in-1 firmware<1.5.1
Dell Inspiron 7306 2-in-1
Dell Inspiron 7400 Firmware<1.8.1
Dell Inspiron 7400 Firmware
Dell Inspiron 7500 Firmware<1.8.0
Dell Inspiron 7500
Dell Inspiron 7500 Firmware<1.3.0
Dell Inspiron 7500 2-in-1
Dell Inspiron 7501 Firmware<1.8.0
Dell Inspiron 7501
Dell Inspiron 7506 Firmware<1.5.1
Dell Inspiron 7506
Dell Inspiron 7610 Firmware<1.0.4
Dell Inspiron 7610 Firmware
Dell Inspiron 7700 AIO Firmware<1.4.0
Dell Inspiron 7700
Dell Inspiron 7706 2-in-1 Firmware<1.5.1
Dell Inspiron 7706 2-in-1
Dell Latitude 3120 Firmware<1.1.0
Dell Latitude 3120 Firmware
Dell Latitude 3320 Firmware<1.4.0
Dell Latitude 3320
Dell Latitude 3410 Firmware<1.9.0
Dell Latitude 3410
Dell Latitude 3420 Firmware<1.8.0
Dell Latitude 3420
Dell Latitude 3510 Firmware<1.9.0
Dell Latitude 3510
Dell Latitude 3520 Firmware<1.8.0
Dell Latitude 3520
Dell Latitude 5310 Firmware<1.7.0
Dell Latitude 5310 Firmware
Dell Latitude 5310 2-in-1 Firmware<1.7.0
Dell Latitude 5310 2-in-1
Dell Latitude 5320 Firmware<1.7.1
Dell Latitude 5320
Dell Latitude 5320 2-in-1 firmware<1.7.1
Dell Latitude 5320 2-in-1 firmware
Dell Latitude 5410 Firmware<1.6.0
Dell Latitude 5410
Dell Latitude 5411 Firmware<1.6.0
Dell Latitude 5411 Firmware
Dell Latitude 5420 Firmware<1.8.0
Dell Latitude 5420
Dell Latitude 5510 Firmware<1.6.0
Dell Latitude 5510
Dell Latitude 5511 Firmware<1.6.0
Dell Latitude 5511 Firmware
Dell Latitude 5520 Firmware<1.7.1
Dell Latitude 5520
Dell Latitude 5521 Firmware<1.3.0_a03
Dell Latitude 5521
Dell Latitude 7210 2-in-1 firmware<1.7.0
Dell Latitude 7210 2-in-1 firmware
Dell Latitude 7310 Firmware<1.7.0
Dell Latitude 7310 Firmware
Dell Latitude 7320 Firmware<1.7.1
Dell Latitude 7320 Firmware
Dell Latitude 7320 Detachable Firmware<1.4.0_a04
Dell Latitude 7320 Detachable Firmware
Dell Latitude 7410 Firmware<1.7.0
Dell Latitude 7410
Dell Latitude 7420 Firmware<1.7.1
Dell Latitude 7420
Dell Latitude 7520 Firmware<1.7.1
Dell Latitude 7520
Dell Latitude 9410 Firmware<1.7.0
Dell Latitude 9410 Firmware
Dell Latitude 9420 Firmware<1.4.1
Dell Latitude 9420 Firmware
Dell Latitude 9510 Firmware<1.6.0
Dell Latitude 9510 Firmware
Dell Latitude 9520 Firmware<1.5.2
Dell Latitude 9520 Firmware
Dell Latitude 5421 Firmware<1.3.0_a03
Dell Latitude 5421
Dell OptiPlex 3080 Firmware<2.1.1
Dell OptiPlex 3080
Dell OptiPlex 3090 UFF Firmware<1.2.0
Dell OptiPlex 3090
Dell OptiPlex 3280 All-in-One Firmware<1.7.0
Dell OptiPlex 3280 All-in-One
Dell OptiPlex 5080 Firmware<1.4.0
Dell OptiPlex 5080 Firmware
Dell OptiPlex 5090 Firmware<1.1.35
Dell OptiPlex 5090
Dell OptiPlex 5490 AIO Firmware<1.3.0
Dell OptiPlex 5490 AIO
Dell OptiPlex 7080 Firmware<1.4.0
Dell OptiPlex 7080 Firmware
Dell OptiPlex 7090 Tower Firmware<1.1.35
Dell OptiPlex 7090 Tower Firmware
Dell OptiPlex 7090 Ultra Firmware<1.2.0
Dell OptiPlex 7090 UFF Firmware
Dell OptiPlex 7480 All-in-One Firmware<1.7.0
Dell OptiPlex 7480 All-in-One Firmware
Dell OptiPlex 7490 All-in-One Firmware<1.3.0
Dell OptiPlex 7490 All-in-One
Dell OptiPlex 7780 All-in-One Firmware<1.7.0
Dell OptiPlex 7780 All-in-One
Dell Precision 17 M5750 Firmware<1.8.2
Dell Precision 17 M5750
Dell Precision 3440 Firmware<1.4.0
Dell Precision 3440
Dell Precision 3450 Firmware<1.1.35
Dell Precision 3450
Dell Precision 3550 Firmware<1.6.0
Dell Precision 3550
Dell Precision 3551 Firmware<1.6.0
Dell Precision 3551 Firmware
Dell Precision 3560 Firmware<1.7.1
Dell Precision 3560
Dell Precision 3561 Firmware<1.3.0_a03
Dell Precision 3561
Dell Precision 3640 Firmware<1.6.2
Dell Precision 3640 Tower
Dell Precision 3650 Firmware<1.2.0
Dell Precision 3650
Dell Precision 5550 Firmware<1.8.1
Dell Precision 5550 Firmware
Dell Precision 5560 Firmware<1.3.2
Dell Precision 5560 Firmware
Dell Precision 5760 Firmware<1.1.3
Dell Precision 5760 Firmware
Dell Precision 7550 Firmware<1.8.0
Dell Precision 7550 Firmware
Dell Precision 7560 Firmware<1.1.2
Dell Precision 7560
Dell Precision 7750 Firmware<1.8.0
Dell Precision 7750
Dell Precision 7760 Firmware<1.1.2
Dell Precision 7760
Dell Vostro 14 5410 Firmware<2.1.0_a06
Dell Vostro 14 5410
Dell Vostro 5510 Firmware<2.1.0_a06
Dell Vostro 15 5510
Dell Vostro 15 7510 Firmware<1.0.4
Dell Vostro 15 7510
Dell Vostro 3400 Firmware<1.6.0
Dell Vostro 3400
Dell Vostro 3500 Firmware<1.6.0
Dell Vostro 3500
Dell Vostro 3501 Firmware<1.6.0
Dell Vostro 3501 Firmware
Dell Vostro 3681 Firmware<2.4.0
Dell Vostro 3681
Dell Vostro 3690 Firmware<1.0.11
Dell Vostro 3690
Dell Vostro 3881 Firmware<2.4.0
Dell Vostro 3881
Dell Vostro 3888 Firmware<2.4.0
Dell Vostro 3888
Dell Vostro 3890 Firmware<1.0.11
Dell Vostro 3890 Firmware
Dell Vostro 5300 Firmware<1.7.1
Dell Vostro 5300
Dell Vostro 5301 Firmware<1.8.1
Dell Vostro 5301
Dell Vostro 5310 Firmware<2.1.0
Dell Vostro 5310
Dell Vostro 5401 Firmware<1.7.2
Dell Vostro 5401 Firmware
Dell Vostro 5402 Firmware<1.5.1
Dell Vostro 5402
Dell Vostro 5501 Firmware<1.7.2
Dell Vostro 5501 Firmware
Dell Vostro 5502 Firmware<1.5.1
Dell Vostro 5502
Dell Vostro 5880 Firmware<1.4.0
Dell Vostro 5880
Dell Vostro 5890 Firmware<1.0.11
Dell Vostro 5890
Dell Vostro 7500 Firmware<1.8.0
Dell Vostro 7500
Dell XPS 13 9305 Firmware<1.0.8
Dell XPS 13 9305
Dell XPS 13 9310 2-in-1<2.3.3
Dell XPS 13 9310 2-in-1
Dell XPS 13 9310 Firmware<3.0.0
Dell XPS 13 9310 Firmware
Dell XPS 15 9500 Firmware<1.8.1
Dell XPS 15 9500
Dell XPS 15 9510 Firmware<1.3.2
Dell XPS 15 9510 Firmware
Dell XPS 17 9700 Firmware<1.8.2
Dell XPS 17 9700
Dell XPS 17 9710 Firmware<1.1.3
Dell XPS 17 9710 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-21574?

    CVE-2021-21574 has a high severity rating due to its potential to allow arbitrary code execution.

  • How do I fix CVE-2021-21574?

    To fix CVE-2021-21574, update the affected Dell firmware to the latest version that addresses this vulnerability.

  • What systems are affected by CVE-2021-21574?

    CVE-2021-21574 affects several Dell models including Alienware M15 R6, and various XPS and Inspiron systems.

  • Can CVE-2021-21574 be exploited remotely?

    No, CVE-2021-21574 requires an authenticated local admin user to exploit the vulnerability.

  • Is there a workaround for CVE-2021-21574?

    Currently, there are no known workarounds for CVE-2021-21574 aside from applying the recommended firmware updates.

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