CVE-2020-11294 [Medium] | Security Vulnerability in Ar8035 Firmware

Out of bound write in logger due to prefix size is not validated while prepended to logging string in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-03-30	0.07%	0.04%	-0.03%
2	2025-03-29	0.04%	0.07%	+0.03%
3	2023-03-07	—	0.04%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-03-30

0.07%

0.04%

-0.03%

2025-03-29

0.04%

0.07%

+0.03%

2023-03-07

—

0.04%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.9	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:N/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:N) No account or special rights needed—anonymous or random user is enough. 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.	2.5	3.4	[email protected]
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

5.9

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/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:N): No account or special rights needed—anonymous or random user is enough.
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.

2.5

3.4

[email protected]

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-2020-11294

Vendor	Product	Version	Raw CPE
qualcomm	ar8035_firmware	—	cpe:2.3:o:qualcomm:ar8035_firmware:-:::::::*
qualcomm	pm215_firmware	—	cpe:2.3:o:qualcomm:pm215_firmware:-:::::::*
qualcomm	pm3003a_firmware	—	cpe:2.3:o:qualcomm:pm3003a_firmware:-:::::::*
qualcomm	pm6125_firmware	—	cpe:2.3:o:qualcomm:pm6125_firmware:-:::::::*
qualcomm	pm6150_firmware	—	cpe:2.3:o:qualcomm:pm6150_firmware:-:::::::*
qualcomm	pm6150a_firmware	—	cpe:2.3:o:qualcomm:pm6150a_firmware:-:::::::*
qualcomm	pm6150l_firmware	—	cpe:2.3:o:qualcomm:pm6150l_firmware:-:::::::*
qualcomm	pm6350_firmware	—	cpe:2.3:o:qualcomm:pm6350_firmware:-:::::::*
qualcomm	pm640a_firmware	—	cpe:2.3:o:qualcomm:pm640a_firmware:-:::::::*
qualcomm	pm640l_firmware	—	cpe:2.3:o:qualcomm:pm640l_firmware:-:::::::*
qualcomm	pm640p_firmware	—	cpe:2.3:o:qualcomm:pm640p_firmware:-:::::::*
qualcomm	pm670_firmware	—	cpe:2.3:o:qualcomm:pm670_firmware:-:::::::*
qualcomm	pm670l_firmware	—	cpe:2.3:o:qualcomm:pm670l_firmware:-:::::::*
qualcomm	pm7150a_firmware	—	cpe:2.3:o:qualcomm:pm7150a_firmware:-:::::::*
qualcomm	pm7150l_firmware	—	cpe:2.3:o:qualcomm:pm7150l_firmware:-:::::::*
qualcomm	pm7250_firmware	—	cpe:2.3:o:qualcomm:pm7250_firmware:-:::::::*
qualcomm	pm7250b_firmware	—	cpe:2.3:o:qualcomm:pm7250b_firmware:-:::::::*
qualcomm	pm8005_firmware	—	cpe:2.3:o:qualcomm:pm8005_firmware:-:::::::*
qualcomm	pm8008_firmware	—	cpe:2.3:o:qualcomm:pm8008_firmware:-:::::::*
qualcomm	pm8009_firmware	—	cpe:2.3:o:qualcomm:pm8009_firmware:-:::::::*
qualcomm	pm8150a_firmware	—	cpe:2.3:o:qualcomm:pm8150a_firmware:-:::::::*
qualcomm	pm8150b_firmware	—	cpe:2.3:o:qualcomm:pm8150b_firmware:-:::::::*
qualcomm	pm8150c_firmware	—	cpe:2.3:o:qualcomm:pm8150c_firmware:-:::::::*
qualcomm	pm8150l_firmware	—	cpe:2.3:o:qualcomm:pm8150l_firmware:-:::::::*
qualcomm	pm8250_firmware	—	cpe:2.3:o:qualcomm:pm8250_firmware:-:::::::*
qualcomm	pm8350_firmware	—	cpe:2.3:o:qualcomm:pm8350_firmware:-:::::::*
qualcomm	pm8350b_firmware	—	cpe:2.3:o:qualcomm:pm8350b_firmware:-:::::::*
qualcomm	pm8350bh_firmware	—	cpe:2.3:o:qualcomm:pm8350bh_firmware:-:::::::*
qualcomm	pm8350c_firmware	—	cpe:2.3:o:qualcomm:pm8350c_firmware:-:::::::*
qualcomm	pm855_firmware	—	cpe:2.3:o:qualcomm:pm855_firmware:-:::::::*
qualcomm	pm855b_firmware	—	cpe:2.3:o:qualcomm:pm855b_firmware:-:::::::*
qualcomm	pm855l_firmware	—	cpe:2.3:o:qualcomm:pm855l_firmware:-:::::::*
qualcomm	pm8909_firmware	—	cpe:2.3:o:qualcomm:pm8909_firmware:-:::::::*
qualcomm	pm8998_firmware	—	cpe:2.3:o:qualcomm:pm8998_firmware:-:::::::*
qualcomm	pmi632_firmware	—	cpe:2.3:o:qualcomm:pmi632_firmware:-:::::::*
qualcomm	pmi8998_firmware	—	cpe:2.3:o:qualcomm:pmi8998_firmware:-:::::::*
qualcomm	pmk8002_firmware	—	cpe:2.3:o:qualcomm:pmk8002_firmware:-:::::::*
qualcomm	pmk8003_firmware	—	cpe:2.3:o:qualcomm:pmk8003_firmware:-:::::::*
qualcomm	pmk8350_firmware	—	cpe:2.3:o:qualcomm:pmk8350_firmware:-:::::::*
qualcomm	pmm6155au_firmware	—	cpe:2.3:o:qualcomm:pmm6155au_firmware:-:::::::*
qualcomm	pmm8155au_firmware	—	cpe:2.3:o:qualcomm:pmm8155au_firmware:-:::::::*
qualcomm	pmm8195au_firmware	—	cpe:2.3:o:qualcomm:pmm8195au_firmware:-:::::::*
qualcomm	pmm855au_firmware	—	cpe:2.3:o:qualcomm:pmm855au_firmware:-:::::::*
qualcomm	pmr525_firmware	—	cpe:2.3:o:qualcomm:pmr525_firmware:-:::::::*
qualcomm	pmr735a_firmware	—	cpe:2.3:o:qualcomm:pmr735a_firmware:-:::::::*
qualcomm	pmr735b_firmware	—	cpe:2.3:o:qualcomm:pmr735b_firmware:-:::::::*
qualcomm	pmw3100_firmware	—	cpe:2.3:o:qualcomm:pmw3100_firmware:-:::::::*
qualcomm	pmx55_firmware	—	cpe:2.3:o:qualcomm:pmx55_firmware:-:::::::*
qualcomm	qat3516_firmware	—	cpe:2.3:o:qualcomm:qat3516_firmware:-:::::::*
qualcomm	qat3518_firmware	—	cpe:2.3:o:qualcomm:qat3518_firmware:-:::::::*
qualcomm	qat3519_firmware	—	cpe:2.3:o:qualcomm:qat3519_firmware:-:::::::*
qualcomm	qat3522_firmware	—	cpe:2.3:o:qualcomm:qat3522_firmware:-:::::::*
qualcomm	qat3550_firmware	—	cpe:2.3:o:qualcomm:qat3550_firmware:-:::::::*
qualcomm	qat3555_firmware	—	cpe:2.3:o:qualcomm:qat3555_firmware:-:::::::*
qualcomm	qat5515_firmware	—	cpe:2.3:o:qualcomm:qat5515_firmware:-:::::::*
qualcomm	qat5516_firmware	—	cpe:2.3:o:qualcomm:qat5516_firmware:-:::::::*
qualcomm	qat5522_firmware	—	cpe:2.3:o:qualcomm:qat5522_firmware:-:::::::*
qualcomm	qat5533_firmware	—	cpe:2.3:o:qualcomm:qat5533_firmware:-:::::::*
qualcomm	qat5568_firmware	—	cpe:2.3:o:qualcomm:qat5568_firmware:-:::::::*
qualcomm	qbt1500_firmware	—	cpe:2.3:o:qualcomm:qbt1500_firmware:-:::::::*
qualcomm	qbt2000_firmware	—	cpe:2.3:o:qualcomm:qbt2000_firmware:-:::::::*
qualcomm	qca6175a_firmware	—	cpe:2.3:o:qualcomm:qca6175a_firmware:-:::::::*
qualcomm	qca6390_firmware	—	cpe:2.3:o:qualcomm:qca6390_firmware:-:::::::*
qualcomm	qca6391_firmware	—	cpe:2.3:o:qualcomm:qca6391_firmware:-:::::::*
qualcomm	qca6421_firmware	—	cpe:2.3:o:qualcomm:qca6421_firmware:-:::::::*
qualcomm	qca6426_firmware	—	cpe:2.3:o:qualcomm:qca6426_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	qca6584au_firmware	—	cpe:2.3:o:qualcomm:qca6584au_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	qcm4290_firmware	—	cpe:2.3:o:qualcomm:qcm4290_firmware:-:::::::*
qualcomm	qcm6125_firmware	—	cpe:2.3:o:qualcomm:qcm6125_firmware:-:::::::*

References for CVE-2020-11294

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

URL

CVE-2020-11294

Exploit prediction scoring system (EPSS) score for CVE-2020-11294

Common vulnerability scoring system (CVSS) metrics for CVE-2020-11294

Weakness enumeration for CVE-2020-11294

Affected software / configurations for CVE-2020-11294

References for CVE-2020-11294