CVE-2020-11157 [High] | Denial of Service in Apq8053 Firmware

u'Lack of handling unexpected control messages while encryption was in progress can terminate the connection and thus leading to a DoS' in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables in APQ8053, APQ8076, MDM9640, MDM9650, MSM8905, MSM8917, MSM8937, MSM8940, MSM8953, QCA6174A, QCA9886, QCM2150, QM215, SDM429, SDM439, SDM450, SDM632

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.16%	0.41%	+0.25%
2	2025-03-17	0.09%	0.16%	+0.07%
3	2023-03-07	—	0.09%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.16%

0.41%

+0.25%

2025-03-17

0.09%

0.16%

+0.07%

2023-03-07

—

0.09%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. 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:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:N/I:N/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:P) Partial availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.1

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

3.6

[email protected]

5.0

2.0

MEDIUM

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

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

2.9

[email protected]

Affected software / configurations for CVE-2020-11157

Vendor	Product	Version	Raw CPE
qualcomm	apq8053_firmware	—	cpe:2.3:o:qualcomm:apq8053_firmware:-:::::::*
qualcomm	apq8076_firmware	—	cpe:2.3:o:qualcomm:apq8076_firmware:-:::::::*
qualcomm	mdm9640_firmware	—	cpe:2.3:o:qualcomm:mdm9640_firmware:-:::::::*
qualcomm	mdm9650_firmware	—	cpe:2.3:o:qualcomm:mdm9650_firmware:-:::::::*
qualcomm	msm8905_firmware	—	cpe:2.3:o:qualcomm:msm8905_firmware:-:::::::*
qualcomm	msm8917_firmware	—	cpe:2.3:o:qualcomm:msm8917_firmware:-:::::::*
qualcomm	msm8937_firmware	—	cpe:2.3:o:qualcomm:msm8937_firmware:-:::::::*
qualcomm	msm8940_firmware	—	cpe:2.3:o:qualcomm:msm8940_firmware:-:::::::*
qualcomm	msm8953_firmware	—	cpe:2.3:o:qualcomm:msm8953_firmware:-:::::::*
qualcomm	qca6174a_firmware	—	cpe:2.3:o:qualcomm:qca6174a_firmware:-:::::::*
qualcomm	qca9886_firmware	—	cpe:2.3:o:qualcomm:qca9886_firmware:-:::::::*
qualcomm	qcm2150_firmware	—	cpe:2.3:o:qualcomm:qcm2150_firmware:-:::::::*
qualcomm	qm215_firmware	—	cpe:2.3:o:qualcomm:qm215_firmware:-:::::::*
qualcomm	sdm429_firmware	—	cpe:2.3:o:qualcomm:sdm429_firmware:-:::::::*
qualcomm	sdm439_firmware	—	cpe:2.3:o:qualcomm:sdm439_firmware:-:::::::*
qualcomm	sdm450_firmware	—	cpe:2.3:o:qualcomm:sdm450_firmware:-:::::::*
qualcomm	sdm632_firmware	—	cpe:2.3:o:qualcomm:sdm632_firmware:-:::::::*

References for CVE-2020-11157

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

URL

CVE-2020-11157

Exploit prediction scoring system (EPSS) score for CVE-2020-11157

Common vulnerability scoring system (CVSS) metrics for CVE-2020-11157

Weakness enumeration for CVE-2020-11157

Affected software / configurations for CVE-2020-11157

References for CVE-2020-11157