CVE-2021-1967 [Medium] | Out-of-bounds Write in Apq8009 Firmware

Possible stack buffer overflow due to lack of check on the maximum number of post NAN discovery attributes while processing a NAN Match event in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-03-17	0.04%	0.06%	+0.02%
2	2023-03-07	0.89%	0.04%	-0.84%
3	2022-04-01	—	0.89%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-03-17

0.04%

0.06%

+0.02%

2023-03-07

0.89%

0.04%

-0.84%

2022-04-01

—

0.89%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.3	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L` 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:L) A normal user session is enough; they don’t have to be admin. 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:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	1.8	3.4	[email protected]
4.6	2.0	MEDIUM	`AV:L/AC:L/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:L) Requires local access to the target system. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	3.9	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.3

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L 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:L): A normal user session is enough; they don’t have to be admin.
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:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

1.8

3.4

[email protected]

4.6

2.0

MEDIUM

AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:L): Requires local access to the target system.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

3.9

6.4

[email protected]

Affected software / configurations for CVE-2021-1967

Vendor	Product	Version	Raw CPE
qualcomm	apq8009_firmware	—	cpe:2.3:o:qualcomm:apq8009_firmware:-:::::::*
qualcomm	apq8053_firmware	—	cpe:2.3:o:qualcomm:apq8053_firmware:-:::::::*
qualcomm	aqt1000_firmware	—	cpe:2.3:o:qualcomm:aqt1000_firmware:-:::::::*
qualcomm	ar8031_firmware	—	cpe:2.3:o:qualcomm:ar8031_firmware:-:::::::*
qualcomm	ar8035_firmware	—	cpe:2.3:o:qualcomm:ar8035_firmware:-:::::::*
qualcomm	csra6620_firmware	—	cpe:2.3:o:qualcomm:csra6620_firmware:-:::::::*
qualcomm	csra6640_firmware	—	cpe:2.3:o:qualcomm:csra6640_firmware:-:::::::*
qualcomm	mdm9206_firmware	—	cpe:2.3:o:qualcomm:mdm9206_firmware:-:::::::*
qualcomm	mdm9628_firmware	—	cpe:2.3:o:qualcomm:mdm9628_firmware:-:::::::*
qualcomm	qca6174a_firmware	—	cpe:2.3:o:qualcomm:qca6174a_firmware:-:::::::*
qualcomm	qca6390_firmware	—	cpe:2.3:o:qualcomm:qca6390_firmware:-:::::::*
qualcomm	qca6391_firmware	—	cpe:2.3:o:qualcomm:qca6391_firmware:-:::::::*
qualcomm	qca6420_firmware	—	cpe:2.3:o:qualcomm:qca6420_firmware:-:::::::*
qualcomm	qca6421_firmware	—	cpe:2.3:o:qualcomm:qca6421_firmware:-:::::::*
qualcomm	qca6426_firmware	—	cpe:2.3:o:qualcomm:qca6426_firmware:-:::::::*
qualcomm	qca6430_firmware	—	cpe:2.3:o:qualcomm:qca6430_firmware:-:::::::*
qualcomm	qca6431_firmware	—	cpe:2.3:o:qualcomm:qca6431_firmware:-:::::::*
qualcomm	qca6436_firmware	—	cpe:2.3:o:qualcomm:qca6436_firmware:-:::::::*
qualcomm	qca6564a_firmware	—	cpe:2.3:o:qualcomm:qca6564a_firmware:-:::::::*
qualcomm	qca6564au_firmware	—	cpe:2.3:o:qualcomm:qca6564au_firmware:-:::::::*
qualcomm	qca6574_firmware	—	cpe:2.3:o:qualcomm:qca6574_firmware:-:::::::*
qualcomm	qca6574a_firmware	—	cpe:2.3:o:qualcomm:qca6574a_firmware:-:::::::*
qualcomm	qca6574au_firmware	—	cpe:2.3:o:qualcomm:qca6574au_firmware:-:::::::*
qualcomm	qca6595_firmware	—	cpe:2.3:o:qualcomm:qca6595_firmware:-:::::::*
qualcomm	qca6595au_firmware	—	cpe:2.3:o:qualcomm:qca6595au_firmware:-:::::::*
qualcomm	qca6696_firmware	—	cpe:2.3:o:qualcomm:qca6696_firmware:-:::::::*
qualcomm	qca8337_firmware	—	cpe:2.3:o:qualcomm:qca8337_firmware:-:::::::*
qualcomm	qca9367_firmware	—	cpe:2.3:o:qualcomm:qca9367_firmware:-:::::::*
qualcomm	qca9377_firmware	—	cpe:2.3:o:qualcomm:qca9377_firmware:-:::::::*
qualcomm	qcm4290_firmware	—	cpe:2.3:o:qualcomm:qcm4290_firmware:-:::::::*
qualcomm	qcm6125_firmware	—	cpe:2.3:o:qualcomm:qcm6125_firmware:-:::::::*
qualcomm	qcs405_firmware	—	cpe:2.3:o:qualcomm:qcs405_firmware:-:::::::*
qualcomm	qcs410_firmware	—	cpe:2.3:o:qualcomm:qcs410_firmware:-:::::::*
qualcomm	qcs4290_firmware	—	cpe:2.3:o:qualcomm:qcs4290_firmware:-:::::::*
qualcomm	qcs605_firmware	—	cpe:2.3:o:qualcomm:qcs605_firmware:-:::::::*
qualcomm	qcs610_firmware	—	cpe:2.3:o:qualcomm:qcs610_firmware:-:::::::*
qualcomm	qcs6125_firmware	—	cpe:2.3:o:qualcomm:qcs6125_firmware:-:::::::*
qualcomm	qrb5165_firmware	—	cpe:2.3:o:qualcomm:qrb5165_firmware:-:::::::*
qualcomm	qualcomm215_firmware	—	cpe:2.3:o:qualcomm:qualcomm215_firmware:-:::::::*
qualcomm	sa6145p_firmware	—	cpe:2.3:o:qualcomm:sa6145p_firmware:-:::::::*
qualcomm	sa6150p_firmware	—	cpe:2.3:o:qualcomm:sa6150p_firmware:-:::::::*
qualcomm	sa6155_firmware	—	cpe:2.3:o:qualcomm:sa6155_firmware:-:::::::*
qualcomm	sa6155p_firmware	—	cpe:2.3:o:qualcomm:sa6155p_firmware:-:::::::*
qualcomm	sa8145p_firmware	—	cpe:2.3:o:qualcomm:sa8145p_firmware:-:::::::*
qualcomm	sa8150p_firmware	—	cpe:2.3:o:qualcomm:sa8150p_firmware:-:::::::*
qualcomm	sa8155_firmware	—	cpe:2.3:o:qualcomm:sa8155_firmware:-:::::::*
qualcomm	sa8155p_firmware	—	cpe:2.3:o:qualcomm:sa8155p_firmware:-:::::::*
qualcomm	sa8195p_firmware	—	cpe:2.3:o:qualcomm:sa8195p_firmware:-:::::::*
qualcomm	sd_675_firmware	—	cpe:2.3:o:qualcomm:sd_675_firmware:-:::::::*
qualcomm	sd_8c_firmware	—	cpe:2.3:o:qualcomm:sd_8c_firmware:-:::::::*
qualcomm	sd_8cx_firmware	—	cpe:2.3:o:qualcomm:sd_8cx_firmware:-:::::::*
qualcomm	sd205_firmware	—	cpe:2.3:o:qualcomm:sd205_firmware:-:::::::*
qualcomm	sd210_firmware	—	cpe:2.3:o:qualcomm:sd210_firmware:-:::::::*
qualcomm	sd460_firmware	—	cpe:2.3:o:qualcomm:sd460_firmware:-:::::::*
qualcomm	sd662_firmware	—	cpe:2.3:o:qualcomm:sd662_firmware:-:::::::*
qualcomm	sd665_firmware	—	cpe:2.3:o:qualcomm:sd665_firmware:-:::::::*
qualcomm	sd675_firmware	—	cpe:2.3:o:qualcomm:sd675_firmware:-:::::::*
qualcomm	sd678_firmware	—	cpe:2.3:o:qualcomm:sd678_firmware:-:::::::*
qualcomm	sd690_5g_firmware	—	cpe:2.3:o:qualcomm:sd690_5g_firmware:-:::::::*
qualcomm	sd720g_firmware	—	cpe:2.3:o:qualcomm:sd720g_firmware:-:::::::*
qualcomm	sd750g_firmware	—	cpe:2.3:o:qualcomm:sd750g_firmware:-:::::::*
qualcomm	sd765_firmware	—	cpe:2.3:o:qualcomm:sd765_firmware:-:::::::*
qualcomm	sd765g_firmware	—	cpe:2.3:o:qualcomm:sd765g_firmware:-:::::::*
qualcomm	sd768g_firmware	—	cpe:2.3:o:qualcomm:sd768g_firmware:-:::::::*
qualcomm	sd778g_firmware	—	cpe:2.3:o:qualcomm:sd778g_firmware:-:::::::*
qualcomm	sd780g_firmware	—	cpe:2.3:o:qualcomm:sd780g_firmware:-:::::::*
qualcomm	sd820_firmware	—	cpe:2.3:o:qualcomm:sd820_firmware:-:::::::*
qualcomm	sd855_firmware	—	cpe:2.3:o:qualcomm:sd855_firmware:-:::::::*
qualcomm	sd865_5g_firmware	—	cpe:2.3:o:qualcomm:sd865_5g_firmware:-:::::::*
qualcomm	sd870_firmware	—	cpe:2.3:o:qualcomm:sd870_firmware:-:::::::*
qualcomm	sd888_5g_firmware	—	cpe:2.3:o:qualcomm:sd888_5g_firmware:-:::::::*
qualcomm	sda429w_firmware	—	cpe:2.3:o:qualcomm:sda429w_firmware:-:::::::*
qualcomm	sdx55_firmware	—	cpe:2.3:o:qualcomm:sdx55_firmware:-:::::::*
qualcomm	sdx55m_firmware	—	cpe:2.3:o:qualcomm:sdx55m_firmware:-:::::::*
qualcomm	sdxr2_5g_firmware	—	cpe:2.3:o:qualcomm:sdxr2_5g_firmware:-:::::::*
qualcomm	sm6250_firmware	—	cpe:2.3:o:qualcomm:sm6250_firmware:-:::::::*
qualcomm	sm7250_firmware	—	cpe:2.3:o:qualcomm:sm7250_firmware:-:::::::*
qualcomm	sm7325_firmware	—	cpe:2.3:o:qualcomm:sm7325_firmware:-:::::::*
qualcomm	wcd9326_firmware	—	cpe:2.3:o:qualcomm:wcd9326_firmware:-:::::::*
qualcomm	wcd9330_firmware	—	cpe:2.3:o:qualcomm:wcd9330_firmware:-:::::::*

References for CVE-2021-1967

URL	Tags
https://www.qualcomm.com/company/product-security/bulletins/october-2021-bulletin	Patch Vendor Advisory

URL

CVE-2021-1967

Exploit prediction scoring system (EPSS) score for CVE-2021-1967

Common vulnerability scoring system (CVSS) metrics for CVE-2021-1967

Weakness enumeration for CVE-2021-1967

Affected software / configurations for CVE-2021-1967

References for CVE-2021-1967