high
7.5
CWE
787 121 119
Advisory Published
Updated

CVE-2021-21573: 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
Dell G15 5511 Firmware<1.3.3
Dell G15 5511
Dell G3 3500 Firmware<=1.9.0
Dell G3 3500
Dell G5 5500 Firmware<1.9.0
Dell G5 5500
Dell G7 7500 Firmware<1.9.0
Dell G7 7500
Dell G7 7700 Firmware<1.9.0
Dell G7 7700
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
Dell Inspiron 3881 Firmware<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
Dell Inspiron 5301 Firmware<1.8.1
Dell Inspiron 5301
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 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 2n1 Firmware<1.5.1
Dell Inspiron 5406 2n1
Dell Inspiron 5408 Firmware<1.7.2
Dell Inspiron 5408
Dell Inspiron 5409 Firmware<1.5.1
Dell Inspiron 5409
Dell Inspiron 5410 2-in-1 Firmware<2.1.0
Dell Inspiron 5410 2-in-1
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
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 2-in-1
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
Dell Inspiron 7500 Firmware<1.8.0
Dell Inspiron 7500
Dell Inspiron 7500 2-in-1 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
Dell Inspiron 7700 Aio Firmware<1.4.0
Dell Inspiron 7700 Aio
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
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
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
Dell Latitude 5410 Firmware<1.6.0
Dell Latitude 5410
Dell Latitude 5411 Firmware<1.6.0
Dell Latitude 5411
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
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
Dell Latitude 7310 Firmware<1.7.0
Dell Latitude 7310
Dell Latitude 7320 Firmware<1.7.1
Dell Latitude 7320
Dell Latitude 7320 Detachable Firmware<1.4.0_a04
Dell Latitude 7320 Detachable
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
Dell Latitude 9420 Firmware<1.4.1
Dell Latitude 9420
Dell Latitude 9510 Firmware<1.6.0
Dell Latitude 9510
Dell Latitude 9520 Firmware<1.5.2
Dell Latitude 9520
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 Uff
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
Dell Optiplex 5090 Tower Firmware<1.1.35
Dell Optiplex 5090 Tower
Dell Optiplex 5490 Aio Firmware<1.3.0
Dell Optiplex 5490 Aio
Dell Optiplex 7080 Firmware<1.4.0
Dell Optiplex 7080
Dell Optiplex 7090 Tower Firmware<1.1.35
Dell Optiplex 7090 Tower
Dell Optiplex 7090 Uff Firmware<1.2.0
Dell Optiplex 7090 Uff
Dell Optiplex 7480 All-in-one Firmware<1.7.0
Dell Optiplex 7480 All-in-one
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
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
Dell Precision 3650 Mt Firmware<1.2.0
Dell Precision 3650 Mt
Dell Precision 5550 Firmware<1.8.1
Dell Precision 5550
Dell Precision 5560 Firmware<1.3.2
Dell Precision 5560
Dell Precision 5760 Firmware<1.1.3
Dell Precision 5760
Dell Precision 7550 Firmware<1.8.0
Dell Precision 7550
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 15 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
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
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
Dell Vostro 5402 Firmware<1.5.1
Dell Vostro 5402
Dell Vostro 5501 Firmware<1.7.2
Dell Vostro 5501
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 2in1 9310 Firmware<2.3.3
Dell Xps 13 2in1 9310
Dell Xps 13 9310 Firmware<3.0.0
Dell Xps 13 9310
Dell Xps 15 9500 Firmware<1.8.1
Dell Xps 15 9500
Dell Xps 15 9510 Firmware<1.3.2
Dell Xps 15 9510
Dell Xps 17 9700 Firmware<1.8.2
Dell Xps 17 9700
Dell Xps 17 9710 Firmware<1.1.3
Dell Xps 17 9710

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-21573?

    The severity of CVE-2021-21573 is rated as high with a score of 7.5.

  • How can I fix the Dell BIOSConnect buffer overflow vulnerability in Dell Alienware M15 R6 Firmware version 1.3.3?

    To fix the vulnerability, update the Dell Alienware M15 R6 Firmware to a version beyond 1.3.3 that addresses the buffer overflow issue.

  • Are Dell Alienware M15 R6 systems vulnerable to CVE-2021-21573?

    No, Dell Alienware M15 R6 systems are not vulnerable to the CVE-2021-21573 vulnerability.

  • Where can I find more information about CVE-2021-21573?

    You can find more information about CVE-2021-21573 at the provided Dell support link: https://www.dell.com/support/kbdoc/en-us/000188682.

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