What is the severity of CVE-2021-1977?

CVE-2021-1977 is rated as a high severity vulnerability due to its potential to cause buffer over-read and exploitation risks.

How do I fix CVE-2021-1977?

The fix for CVE-2021-1977 involves applying the latest firmware updates or patches provided by Qualcomm or your device manufacturer.

Which devices are affected by CVE-2021-1977?

CVE-2021-1977 affects various Snapdragon processors, including but not limited to APQ8009, APQ8017, APQ8053, and several others listed in the advisory.

What type of vulnerability is CVE-2021-1977?

CVE-2021-1977 is classified as a buffer over-read vulnerability due to improper validation of frame length.

Can CVE-2021-1977 be exploited remotely?

Yes, CVE-2021-1977 may potentially be exploitable remotely, increasing the risk for affected devices.

Vulnerability/
CVE-2021-1977

critical

9.1

CWE

125

4/10/2021

20/10/2021

3/8/2024

CVE-2021-1977

First published: Mon Oct 04 2021(Updated: )

Possible buffer over read due to improper validation of frame length while processing AEAD decryption during ASSOC response in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music

Credit: product-security@qualcomm.com

Affected Software	Affected Version	How to fix
Android
Qualcomm APQ8009W Firmware
Qualcomm APQ8009 Firmware
Qualcomm APQ8017
Qualcomm APQ8017
Qualcomm APQ8053
Qualcomm APQ8053 Firmware
Qualcomm APQ8064AU
Qualcomm APQ8064 AU Firmware
Qualcomm APQ8096AU Firmware
Qualcomm APQ8096AU Firmware
Qualcomm AR8031
Qualcomm AR8031 Firmware
Qualcomm AR8035 Firmware
Qualcomm AR8035 Firmware
Qualcomm CSRA6620
Qualcomm CSRA6620
Qualcomm CSRA6640 Firmware
Qualcomm csra6640 firmware
Qualcomm CSRB31024 Firmware
Qualcomm CSRB31024 Firmware
Qualcomm MDM9150 Firmware
Qualcomm MDM9150 firmware
Qualcomm MDM9206
Qualcomm MDM9206 firmware
Qualcomm MDM9250
Qualcomm MDM9250 Firmware
Qualcomm MD9607 Firmware
Qualcomm MDM9607 firmware
Qualcomm MDM9626
Qualcomm MDM9626 Firmware
Qualcomm MDM9628 Firmware
Qualcomm MDM9628
Qualcomm MDM9650
Qualcomm MDM9650 firmware
Qualcomm 8953Pro Firmware
Qualcomm MSM8953 Firmware
qualcomm MSM8996AU firmware
Qualcomm MSM8996AU Firmware
Qualcomm QCA-4020 Firmware
Qualcomm QCA-4020-1-217MSP
Qualcomm QCA6174A Firmware
Qualcomm QCA6174A Firmware
Qualcomm QCA6175A Firmware
Qualcomm QCA6175A Firmware
Qualcomm QCA6310 Firmware
Qualcomm QCA6310 Firmware
Qualcomm QCA6320 Firmware
Qualcomm QCA6320 Firmware
Qualcomm QCA6335 Firmware
Qualcomm QCA6335 Firmware
Qualcomm QCA6390 Firmware
Qualcomm QCA6390 Firmware
Qualcomm QCA6391 Firmware
Qualcomm QCA6391 Firmware
Qualcomm QCA6426 Firmware
Qualcomm QCA6426 Firmware
Qualcomm QCA6436 Firmware
Qualcomm QCA6436 Firmware
Qualcomm QCA6564A
Qualcomm QCA6564A Firmware
Qualcomm QCA6564AU Firmware
Qualcomm QCA6564A
Qualcomm QCA6574 Firmware
Qualcomm QCA6574 Firmware
Qualcomm QCA6574A Firmware
qualcomm qca6574a firmware
Qualcomm QCA6574 Firmware
Qualcomm QCA6574AU
Qualcomm QCA6584AU Firmware
Qualcomm QCA6584AU firmware
Qualcomm QCA6595AU Firmware
Qualcomm QCA6595AU Firmware
Qualcomm QCA6595AU Firmware
Qualcomm QCA6595AU Firmware
Qualcomm QCA6696 Firmware
Qualcomm QCA6696 Firmware
Qualcomm QCA8337 Firmware
Qualcomm QCA8337 Firmware
Qualcomm QCA9367 Firmware
Qualcomm QCA9367 Firmware
Qualcomm QCA9377 Firmware
Qualcomm QCA9377 Firmware
Qualcomm QCA9379
Qualcomm QCA9379
Qualcomm QCM4290
Qualcomm QCM4290 Firmware
Qualcomm QCM6125 Firmware
Qualcomm QCM6125 Firmware
Qualcomm QCS405 Firmware
Qualcomm QCS405 Firmware
Qualcomm QCS410 Firmware
Qualcomm QCS410 Firmware
Qualcomm QCS4290 Firmware
Qualcomm QCS4290 Firmware
Qualcomm QCS603
Qualcomm QCS603 Firmware
Qualcomm QCS605
Qualcomm QCS605 Firmware
Qualcomm QCS610 Firmware
Qualcomm QCS610 Firmware
Qualcomm QCS6125 Firmware
Qualcomm QCS6125 Firmware
Qualcomm QRB5165N Firmware
Qualcomm QRB5165 Firmware
Qualcomm SA415M Firmware
Qualcomm SA415M Firmware
Qualcomm SA515M Firmware
Qualcomm SA515M Firmware
Qualcomm SA6145P Firmware
Qualcomm SA6145P Firmware
Qualcomm SA6150P Firmware
Qualcomm SA6150P Firmware
Qualcomm SA6155
Qualcomm SA6155 Firmware
Qualcomm SA6155
Qualcomm SA6155P
Qualcomm SA8145P
Qualcomm SA8145P Firmware
Qualcomm SA8150P Firmware
Qualcomm SA8150P Firmware
Qualcomm SA8155P Firmware
Qualcomm SA8155 Firmware
Qualcomm SA8155
Qualcomm SA8155P Firmware
Qualcomm SA8195P
Qualcomm SA8195P Firmware
Qualcomm SD 675 Firmware
Qualcomm Snapdragon 675
Qualcomm SD460 Firmware
Qualcomm SD460 Firmware
Qualcomm Snapdragon 660 Firmware
Qualcomm Snapdragon 660
Qualcomm SD662 Firmware
Qualcomm SD662 Firmware
Qualcomm Snapdragon 665
Qualcomm Snapdragon 665
Qualcomm SD 675 Firmware
Qualcomm Snapdragon 675
Qualcomm SD678 Firmware
Qualcomm SD678 Firmware
Qualcomm Snapdragon 690 5G Firmware
Qualcomm Snapdragon 690 5G Firmware
Qualcomm Snapdragon 720G Firmware
Qualcomm SD720G Firmware
Qualcomm SD750G Firmware
Qualcomm Snapdragon 750G
Qualcomm SD765 Firmware
Qualcomm Snapdragon 765
Qualcomm SD765 Firmware
Qualcomm Snapdragon 765G
Qualcomm SD768 Firmware
Qualcomm SD768G Firmware
Qualcomm SD778G Firmware
Qualcomm Snapdragon 778G
Qualcomm Snapdragon 780G Firmware
Qualcomm Snapdragon 780G
Qualcomm SD 820 Firmware
Qualcomm Snapdragon 820
Qualcomm Snapdragon 835
Qualcomm Snapdragon 835
Qualcomm SDA845 Firmware
Qualcomm Snapdragon 845
Qualcomm Snapdragon 855
Qualcomm Snapdragon 855
Qualcomm Snapdragon 865 5G Firmware
Qualcomm Snapdragon 865 5G Firmware
Qualcomm SD870
Qualcomm Snapdragon 870
Qualcomm Snapdragon 888 Firmware
Qualcomm Snapdragon 888 Firmware
Qualcomm Snapdragon 888 5G Firmware
Qualcomm Snapdragon 888 5G
Qualcomm SD 12 Firmware
Qualcomm SDX12
Qualcomm SDX20 Firmware
Qualcomm SDX20 Firmware
Qualcomm SDX20 Firmware
Qualcomm SDX20 Firmware
Qualcomm SDX55M Firmware
Qualcomm SDX55 Firmware
Qualcomm SDX55M Firmware
Qualcomm SDX55M Firmware
Qualcomm SDXR1
Qualcomm SDXR1 Firmware
Qualcomm SDXR2 5G Firmware
Qualcomm SDXR2 5G Firmware
Qualcomm SM4125
Qualcomm SM4125 Firmware
Qualcomm SM6250P Firmware
Qualcomm SM6250 Firmware
Qualcomm SSM7250-AA Firmware
Qualcomm SSM7250-AA Firmware
Qualcomm SM7325-AE Firmware
Qualcomm SM7325 Firmware
Qualcomm WCD9326
Qualcomm WCD9326 Firmware
Qualcomm WCD9330
Qualcomm WCD9330 Firmware
Qualcomm WCD9335 Firmware
Qualcomm WCD9335 Firmware
Qualcomm WCD9340 Firmware
Qualcomm WCD9340 Firmware
Qualcomm WCD9341
Qualcomm WCD9341 Firmware
Qualcomm WCD9370 Firmware
Qualcomm WCD9370 Firmware
Qualcomm WCD9375
Qualcomm WCD9375 Firmware
Qualcomm WCD9380
Qualcomm WCD9380 Firmware
Qualcomm WCD9385
Qualcomm WCD9385 Firmware
Qualcomm WCN3610 Firmware
Qualcomm WCN3610 Firmware
Qualcomm WCN3615 Firmware
Qualcomm WCN3615 Firmware
Qualcomm WCN3660B
Qualcomm WCN3660B Firmware
Qualcomm WCN3680B Firmware
Qualcomm WCN3680B Firmware
Qualcomm WCN3910 Firmware
Qualcomm WCN3910 Firmware
Qualcomm WCN3950 Firmware
Qualcomm WCN3950 Firmware
Qualcomm Wcn3980
Qualcomm WCN3980
Qualcomm WCN3988 Firmware
Qualcomm WCN3988 Firmware
Qualcomm WCN3990
Qualcomm WCN3990
Qualcomm WCN3991 Firmware
Qualcomm WCN3991 Firmware
Qualcomm WCN3998 Firmware
Qualcomm wcn3998 firmware
Qualcomm WCN3999 Firmware
Qualcomm WCN3999 Firmware
Qualcomm WCN6740 Firmware
Qualcomm WCN6740 Firmware
Qualcomm WCN6750 Firmware
Qualcomm WCN6750 Firmware
Qualcomm WCN6850 Firmware
Qualcomm WCN6850 Firmware
Qualcomm WCN6851 Firmware
Qualcomm WCN6851 Firmware
Qualcomm WCN6855 Firmware
Qualcomm WCN6855 Firmware
Qualcomm WCN6856 Firmware
Qualcomm WCN6856 Firmware
Qualcomm WSA8810
Qualcomm WSA8810 Firmware
Qualcomm WSA8815 Firmware
Qualcomm WSA8815 Firmware
Qualcomm WSA8830
Qualcomm WSA8830
Qualcomm WSA8835
Qualcomm WSA8835 Firmware

Remedy

https://www.qualcomm.com/company/product-security/bulletins/october-2021-bulletin

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-1977?
CVE-2021-1977 is rated as a high severity vulnerability due to its potential to cause buffer over-read and exploitation risks.
How do I fix CVE-2021-1977?
The fix for CVE-2021-1977 involves applying the latest firmware updates or patches provided by Qualcomm or your device manufacturer.
Which devices are affected by CVE-2021-1977?
CVE-2021-1977 affects various Snapdragon processors, including but not limited to APQ8009, APQ8017, APQ8053, and several others listed in the advisory.
What type of vulnerability is CVE-2021-1977?
CVE-2021-1977 is classified as a buffer over-read vulnerability due to improper validation of frame length.
Can CVE-2021-1977 be exploited remotely?
Yes, CVE-2021-1977 may potentially be exploitable remotely, increasing the risk for affected devices.