CVE-2020-3684 [High] | Security Vulnerability in Agatti Firmware

u'QSEE reads the access permission policy for the SMEM TOC partition from the SMEM TOC contents populated by XBL Loader and applies them without validation' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking in Agatti, APQ8009, APQ8098, Bitra, IPQ6018, Kamorta, MDM9150, MDM9205, MDM9206, MDM9607, MDM9650, MSM8905, MSM8998, Nicobar, QCA6390, QCS404, QCS405, QCS605, QCS610, Rennell, SA415M, SA515M, SA6155P, SA8155P, Saipan, SC7180, SC8180X, SDA660, SDA845, SDM630, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SDX20, SDX24, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.10%	0.22%	+0.12%
2	2025-11-21	0.04%	0.10%	+0.06%
3	2025-11-18	—	0.04%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.10%

0.22%

+0.12%

2025-11-21

0.04%

0.10%

+0.06%

2025-11-18

—

0.04%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:L/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: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: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.	1.8	5.9	[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

7.8

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/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: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: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.

1.8

5.9

[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-2020-3684

Vendor	Product	Version	Raw CPE
qualcomm	agatti_firmware	—	cpe:2.3:o:qualcomm:agatti_firmware:-:::::::*
qualcomm	apq8009_firmware	—	cpe:2.3:o:qualcomm:apq8009_firmware:-:::::::*
qualcomm	apq8098_firmware	—	cpe:2.3:o:qualcomm:apq8098_firmware:-:::::::*
qualcomm	bitra_firmware	—	cpe:2.3:o:qualcomm:bitra_firmware:-:::::::*
qualcomm	ipq6018_firmware	—	cpe:2.3:o:qualcomm:ipq6018_firmware:-:::::::*
qualcomm	kamorta_firmware	—	cpe:2.3:o:qualcomm:kamorta_firmware:-:::::::*
qualcomm	mdm9150_firmware	—	cpe:2.3:o:qualcomm:mdm9150_firmware:-:::::::*
qualcomm	mdm9205_firmware	—	cpe:2.3:o:qualcomm:mdm9205_firmware:-:::::::*
qualcomm	mdm9206_firmware	—	cpe:2.3:o:qualcomm:mdm9206_firmware:-:::::::*
qualcomm	mdm9607_firmware	—	cpe:2.3:o:qualcomm:mdm9607_firmware:-:::::::*
qualcomm	mdm9650_firmware	—	cpe:2.3:o:qualcomm:mdm9650_firmware:-:::::::*
qualcomm	msm8905_firmware	—	cpe:2.3:o:qualcomm:msm8905_firmware:-:::::::*
qualcomm	msm8998_firmware	—	cpe:2.3:o:qualcomm:msm8998_firmware:-:::::::*
qualcomm	nicobar_firmware	—	cpe:2.3:o:qualcomm:nicobar_firmware:-:::::::*
qualcomm	qca6390_firmware	—	cpe:2.3:o:qualcomm:qca6390_firmware:-:::::::*
qualcomm	qcs404_firmware	—	cpe:2.3:o:qualcomm:qcs404_firmware:-:::::::*
qualcomm	qcs405_firmware	—	cpe:2.3:o:qualcomm:qcs405_firmware:-:::::::*
qualcomm	qcs605_firmware	—	cpe:2.3:o:qualcomm:qcs605_firmware:-:::::::*
qualcomm	qcs610_firmware	—	cpe:2.3:o:qualcomm:qcs610_firmware:-:::::::*
qualcomm	rennell_firmware	—	cpe:2.3:o:qualcomm:rennell_firmware:-:::::::*
qualcomm	sa415m_firmware	—	cpe:2.3:o:qualcomm:sa415m_firmware:-:::::::*
qualcomm	sa515m_firmware	—	cpe:2.3:o:qualcomm:sa515m_firmware:-:::::::*
qualcomm	sa6155p_firmware	—	cpe:2.3:o:qualcomm:sa6155p_firmware:-:::::::*
qualcomm	sa8155p_firmware	—	cpe:2.3:o:qualcomm:sa8155p_firmware:-:::::::*
qualcomm	saipan_firmware	—	cpe:2.3:o:qualcomm:saipan_firmware:-:::::::*
qualcomm	sc7180_firmware	—	cpe:2.3:o:qualcomm:sc7180_firmware:-:::::::*
qualcomm	sc8180x_firmware	—	cpe:2.3:o:qualcomm:sc8180x_firmware:-:::::::*
qualcomm	sda660_firmware	—	cpe:2.3:o:qualcomm:sda660_firmware:-:::::::*
qualcomm	sda845_firmware	—	cpe:2.3:o:qualcomm:sda845_firmware:-:::::::*
qualcomm	sdm630_firmware	—	cpe:2.3:o:qualcomm:sdm630_firmware:-:::::::*
qualcomm	sdm636_firmware	—	cpe:2.3:o:qualcomm:sdm636_firmware:-:::::::*
qualcomm	sdm660_firmware	—	cpe:2.3:o:qualcomm:sdm660_firmware:-:::::::*
qualcomm	sdm670_firmware	—	cpe:2.3:o:qualcomm:sdm670_firmware:-:::::::*
qualcomm	sdm710_firmware	—	cpe:2.3:o:qualcomm:sdm710_firmware:-:::::::*
qualcomm	sdm845_firmware	—	cpe:2.3:o:qualcomm:sdm845_firmware:-:::::::*
qualcomm	sdm850_firmware	—	cpe:2.3:o:qualcomm:sdm850_firmware:-:::::::*
qualcomm	sdx20_firmware	—	cpe:2.3:o:qualcomm:sdx20_firmware:-:::::::*
qualcomm	sdx24_firmware	—	cpe:2.3:o:qualcomm:sdx24_firmware:-:::::::*
qualcomm	sdx55_firmware	—	cpe:2.3:o:qualcomm:sdx55_firmware:-:::::::*
qualcomm	sm6150_firmware	—	cpe:2.3:o:qualcomm:sm6150_firmware:-:::::::*
qualcomm	sm7150_firmware	—	cpe:2.3:o:qualcomm:sm7150_firmware:-:::::::*
qualcomm	sm8150_firmware	—	cpe:2.3:o:qualcomm:sm8150_firmware:-:::::::*
qualcomm	sm8250_firmware	—	cpe:2.3:o:qualcomm:sm8250_firmware:-:::::::*
qualcomm	sxr1130_firmware	—	cpe:2.3:o:qualcomm:sxr1130_firmware:-:::::::*
qualcomm	sxr2130_firmware	—	cpe:2.3:o:qualcomm:sxr2130_firmware:-:::::::*

References for CVE-2020-3684

URL	Tags
https://www.qualcomm.com/company/product-security/bulletins/october-2020-bulletin	Broken Link
https://www.qualcomm.com/company/product-security/bulletins/october-2020-security-bulletin	Vendor Advisory

URL

CVE-2020-3684

Exploit prediction scoring system (EPSS) score for CVE-2020-3684

Common vulnerability scoring system (CVSS) metrics for CVE-2020-3684

Weakness enumeration for CVE-2020-3684

Affected software / configurations for CVE-2020-3684

References for CVE-2020-3684