CVE-2021-30299 [Medium] | Input Validation Bypass in Wsa8835 Firmware

CVE-2021-30299 is rated Low Risk (28.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.03%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-04-10	0.10%	0.03%	-0.07%
2	2025-04-09	0.04%	0.10%	+0.05%
3	2024-11-23	—	0.04%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-04-10

0.10%

0.03%

-0.07%

2025-04-09

0.04%

0.10%

+0.05%

2024-11-23

—

0.04%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.7	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:H) They need powerful rights—admin, root, or similar—before this pays off. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	0.8	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

6.7

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H): They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

0.8

5.9

[email protected]

Affected software / configurations for CVE-2021-30299

Vendor	Product	Version	Raw CPE
qualcomm	wsa8835_firmware	—	cpe:2.3:o:qualcomm:wsa8835_firmware:-:::::::*
qualcomm	wsa8830_firmware	—	cpe:2.3:o:qualcomm:wsa8830_firmware:-:::::::*
qualcomm	wsa8815_firmware	—	cpe:2.3:o:qualcomm:wsa8815_firmware:-:::::::*
qualcomm	wsa8810_firmware	—	cpe:2.3:o:qualcomm:wsa8810_firmware:-:::::::*
qualcomm	wcn6856_firmware	—	cpe:2.3:o:qualcomm:wcn6856_firmware:-:::::::*
qualcomm	wcn6855_firmware	—	cpe:2.3:o:qualcomm:wcn6855_firmware:-:::::::*
qualcomm	wcn6851_firmware	—	cpe:2.3:o:qualcomm:wcn6851_firmware:-:::::::*
qualcomm	wcn6850_firmware	—	cpe:2.3:o:qualcomm:wcn6850_firmware:-:::::::*
qualcomm	wcn6750_firmware	—	cpe:2.3:o:qualcomm:wcn6750_firmware:-:::::::*
qualcomm	wcn6740_firmware	—	cpe:2.3:o:qualcomm:wcn6740_firmware:-:::::::*
qualcomm	wcn3998_firmware	—	cpe:2.3:o:qualcomm:wcn3998_firmware:-:::::::*
qualcomm	wcn3991_firmware	—	cpe:2.3:o:qualcomm:wcn3991_firmware:-:::::::*
qualcomm	wcn3990_firmware	—	cpe:2.3:o:qualcomm:wcn3990_firmware:-:::::::*
qualcomm	wcn3988_firmware	—	cpe:2.3:o:qualcomm:wcn3988_firmware:-:::::::*
qualcomm	wcn3980_firmware	—	cpe:2.3:o:qualcomm:wcn3980_firmware:-:::::::*
qualcomm	wcn3950_firmware	—	cpe:2.3:o:qualcomm:wcn3950_firmware:-:::::::*
qualcomm	wcn3910_firmware	—	cpe:2.3:o:qualcomm:wcn3910_firmware:-:::::::*
qualcomm	wcn3660b_firmware	—	cpe:2.3:o:qualcomm:wcn3660b_firmware:-:::::::*
qualcomm	wcn3620_firmware	—	cpe:2.3:o:qualcomm:wcn3620_firmware:-:::::::*
qualcomm	wcn3610_firmware	—	cpe:2.3:o:qualcomm:wcn3610_firmware:-:::::::*
qualcomm	wcd9385_firmware	—	cpe:2.3:o:qualcomm:wcd9385_firmware:-:::::::*
qualcomm	wcd9380_firmware	—	cpe:2.3:o:qualcomm:wcd9380_firmware:-:::::::*
qualcomm	wcd9375_firmware	—	cpe:2.3:o:qualcomm:wcd9375_firmware:-:::::::*
qualcomm	wcd9370_firmware	—	cpe:2.3:o:qualcomm:wcd9370_firmware:-:::::::*
qualcomm	wcd9341_firmware	—	cpe:2.3:o:qualcomm:wcd9341_firmware:-:::::::*
qualcomm	wcd9340_firmware	—	cpe:2.3:o:qualcomm:wcd9340_firmware:-:::::::*
qualcomm	wcd9335_firmware	—	cpe:2.3:o:qualcomm:wcd9335_firmware:-:::::::*
qualcomm	sm7250p_firmware	—	cpe:2.3:o:qualcomm:sm7250p_firmware:-:::::::*
qualcomm	sm6375_firmware	—	cpe:2.3:o:qualcomm:sm6375_firmware:-:::::::*
qualcomm	sm6225_firmware	—	cpe:2.3:o:qualcomm:sm6225_firmware:-:::::::*
qualcomm	sdxr2_5g_firmware	—	cpe:2.3:o:qualcomm:sdxr2_5g_firmware:-:::::::*
qualcomm	sdx55m_firmware	—	cpe:2.3:o:qualcomm:sdx55m_firmware:-:::::::*
qualcomm	sdx55_firmware	—	cpe:2.3:o:qualcomm:sdx55_firmware:-:::::::*
qualcomm	sda429w_firmware	—	cpe:2.3:o:qualcomm:sda429w_firmware:-:::::::*
qualcomm	sd888_5g_firmware	—	cpe:2.3:o:qualcomm:sd888_5g_firmware:-:::::::*
qualcomm	sd870_firmware	—	cpe:2.3:o:qualcomm:sd870_firmware:-:::::::*
qualcomm	sd865_5g_firmware	—	cpe:2.3:o:qualcomm:sd865_5g_firmware:-:::::::*
qualcomm	sd780g_firmware	—	cpe:2.3:o:qualcomm:sd780g_firmware:-:::::::*
qualcomm	sd768g_firmware	—	cpe:2.3:o:qualcomm:sd768g_firmware:-:::::::*
qualcomm	sd765g_firmware	—	cpe:2.3:o:qualcomm:sd765g_firmware:-:::::::*
qualcomm	sd765_firmware	—	cpe:2.3:o:qualcomm:sd765_firmware:-:::::::*
qualcomm	sd480_firmware	—	cpe:2.3:o:qualcomm:sd480_firmware:-:::::::*
qualcomm	sd210_firmware	—	cpe:2.3:o:qualcomm:sd210_firmware:-:::::::*
qualcomm	sd205_firmware	—	cpe:2.3:o:qualcomm:sd205_firmware:-:::::::*
qualcomm	sa8195p_firmware	—	cpe:2.3:o:qualcomm:sa8195p_firmware:-:::::::*
qualcomm	sa8155p_firmware	—	cpe:2.3:o:qualcomm:sa8155p_firmware:-:::::::*
qualcomm	sa8150p_firmware	—	cpe:2.3:o:qualcomm:sa8150p_firmware:-:::::::*
qualcomm	sa8145p_firmware	—	cpe:2.3:o:qualcomm:sa8145p_firmware:-:::::::*
qualcomm	sa6155p_firmware	—	cpe:2.3:o:qualcomm:sa6155p_firmware:-:::::::*
qualcomm	sa6150p_firmware	—	cpe:2.3:o:qualcomm:sa6150p_firmware:-:::::::*
qualcomm	sa6145p_firmware	—	cpe:2.3:o:qualcomm:sa6145p_firmware:-:::::::*
qualcomm	qrb5165n_firmware	—	cpe:2.3:o:qualcomm:qrb5165n_firmware:-:::::::*
qualcomm	qrb5165m_firmware	—	cpe:2.3:o:qualcomm:qrb5165m_firmware:-:::::::*
qualcomm	qrb5165_firmware	—	cpe:2.3:o:qualcomm:qrb5165_firmware:-:::::::*
qualcomm	qcs6490_firmware	—	cpe:2.3:o:qualcomm:qcs6490_firmware:-:::::::*
qualcomm	qcs6125_firmware	—	cpe:2.3:o:qualcomm:qcs6125_firmware:-:::::::*
qualcomm	qcs610_firmware	—	cpe:2.3:o:qualcomm:qcs610_firmware:-:::::::*
qualcomm	qcs605_firmware	—	cpe:2.3:o:qualcomm:qcs605_firmware:-:::::::*
qualcomm	qcs603_firmware	—	cpe:2.3:o:qualcomm:qcs603_firmware:-:::::::*
qualcomm	qcs4290_firmware	—	cpe:2.3:o:qualcomm:qcs4290_firmware:-:::::::*
qualcomm	qcs410_firmware	—	cpe:2.3:o:qualcomm:qcs410_firmware:-:::::::*
qualcomm	qcs405_firmware	—	cpe:2.3:o:qualcomm:qcs405_firmware:-:::::::*
qualcomm	qcs2290_firmware	—	cpe:2.3:o:qualcomm:qcs2290_firmware:-:::::::*
qualcomm	qcm6490_firmware	—	cpe:2.3:o:qualcomm:qcm6490_firmware:-:::::::*
qualcomm	qcm6125_firmware	—	cpe:2.3:o:qualcomm:qcm6125_firmware:-:::::::*
qualcomm	qcm4290_firmware	—	cpe:2.3:o:qualcomm:qcm4290_firmware:-:::::::*
qualcomm	qcm2290_firmware	—	cpe:2.3:o:qualcomm:qcm2290_firmware:-:::::::*
qualcomm	qca8337_firmware	—	cpe:2.3:o:qualcomm:qca8337_firmware:-:::::::*
qualcomm	qca6696_firmware	—	cpe:2.3:o:qualcomm:qca6696_firmware:-:::::::*
qualcomm	qca6574au_firmware	—	cpe:2.3:o:qualcomm:qca6574au_firmware:-:::::::*
qualcomm	qca6574a_firmware	—	cpe:2.3:o:qualcomm:qca6574a_firmware:-:::::::*
qualcomm	qca6564au_firmware	—	cpe:2.3:o:qualcomm:qca6564au_firmware:-:::::::*
qualcomm	qca6564a_firmware	—	cpe:2.3:o:qualcomm:qca6564a_firmware:-:::::::*
qualcomm	qca6564_firmware	—	cpe:2.3:o:qualcomm:qca6564_firmware:-:::::::*
qualcomm	qca6436_firmware	—	cpe:2.3:o:qualcomm:qca6436_firmware:-:::::::*
qualcomm	qca6426_firmware	—	cpe:2.3:o:qualcomm:qca6426_firmware:-:::::::*
qualcomm	qca6391_firmware	—	cpe:2.3:o:qualcomm:qca6391_firmware:-:::::::*
qualcomm	qca6390_firmware	—	cpe:2.3:o:qualcomm:qca6390_firmware:-:::::::*
qualcomm	mdm9150_firmware	—	cpe:2.3:o:qualcomm:mdm9150_firmware:-:::::::*
qualcomm	csra6640_firmware	—	cpe:2.3:o:qualcomm:csra6640_firmware:-:::::::*

References for CVE-2021-30299

URL	Tags
https://docs.qualcomm.com/product/publicresources/securitybulletin/march-2022-bulletin.html	Patch Vendor Advisory

URL

CVE-2021-30299 | Improper Input Validation in Audio

Exploit prediction scoring system (EPSS) score for CVE-2021-30299

Common vulnerability scoring system (CVSS) metrics for CVE-2021-30299

Weakness enumeration for CVE-2021-30299

Affected software / configurations for CVE-2021-30299

References for CVE-2021-30299