CVE-2018-19860 [High] | Security Vulnerability in Bcm4335c0 Firmware

Broadcom firmware before summer 2014 on Nexus 5 BCM4335C0 2012-12-11, Raspberry Pi 3 BCM43438A1 2014-06-02, and unspecifed other devices does not properly restrict LMP commnds and executes certain memory contents upon receiving an LMP command, as demonstrated by executing an HCI command.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.61%	1.02%	+0.41%
2	2025-11-21	0.47%	0.61%	+0.14%
3	2025-11-18	—	0.47%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.61%

1.02%

+0.41%

2025-11-21

0.47%

0.61%

+0.14%

2025-11-18

—

0.47%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.8	3.0	HIGH	`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:A) Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet. 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: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.	2.8	5.9	[email protected]
5.8	2.0	MEDIUM	`AV:A/AC:L/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:A) Requires access to an adjacent network segment. 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.	6.5	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

8.8

3.0

HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:A): Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
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: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.

2.8

5.9

[email protected]

5.8

2.0

MEDIUM

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

Access vector (AV:A): Requires access to an adjacent network segment.
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.

6.5

6.4

[email protected]

Affected software / configurations for CVE-2018-19860

Vendor	Product	Version	Raw CPE
broadcom	bcm4335c0_firmware	2012-12-11	cpe:2.3:o:broadcom:bcm4335c0_firmware:2012-12-11:::::::*
broadcom	bcm43438a1_firmware	2014-06-02	cpe:2.3:o:broadcom:bcm43438a1_firmware:2014-06-02:::::::*
cypress	cyw20702a1kwfbg_firmware	—	cpe:2.3:o:cypress:cyw20702a1kwfbg_firmware:-:::::::*
cypress	cyw20702a1kwfbgt_firmware	—	cpe:2.3:o:cypress:cyw20702a1kwfbgt_firmware:-:::::::*
cypress	cyw20702b0kwfbg_firmware	—	cpe:2.3:o:cypress:cyw20702b0kwfbg_firmware:-:::::::*
cypress	cyw20702b0kwfbgt_firmware	—	cpe:2.3:o:cypress:cyw20702b0kwfbgt_firmware:-:::::::*
cypress	cyw20703ua1kffb1g_firmware	—	cpe:2.3:o:cypress:cyw20703ua1kffb1g_firmware:-:::::::*
cypress	cyw20703ua1kffb1gt_firmware	—	cpe:2.3:o:cypress:cyw20703ua1kffb1gt_firmware:-:::::::*
cypress	cyw20704ua1kffb1g_firmware	—	cpe:2.3:o:cypress:cyw20704ua1kffb1g_firmware:-:::::::*
cypress	cyw20704ua1kffb1gt_firmware	—	cpe:2.3:o:cypress:cyw20704ua1kffb1gt_firmware:-:::::::*
cypress	cyw20704ua2kffb1g_firmware	—	cpe:2.3:o:cypress:cyw20704ua2kffb1g_firmware:-:::::::*
cypress	cyw20704ua2kffb1gt_firmware	—	cpe:2.3:o:cypress:cyw20704ua2kffb1gt_firmware:-:::::::*
cypress	cyw20705a1kwfbgt_firmware	—	cpe:2.3:o:cypress:cyw20705a1kwfbgt_firmware:-:::::::*
cypress	cyw20705b0kwfbg_firmware	—	cpe:2.3:o:cypress:cyw20705b0kwfbg_firmware:-:::::::*
cypress	cyw20705b0kwfbgt_firmware	—	cpe:2.3:o:cypress:cyw20705b0kwfbgt_firmware:-:::::::*
cypress	cyw20706ua1kffb1g_firmware	—	cpe:2.3:o:cypress:cyw20706ua1kffb1g_firmware:-:::::::*
cypress	cyw20706ua1kffb1gt_firmware	—	cpe:2.3:o:cypress:cyw20706ua1kffb1gt_firmware:-:::::::*
cypress	cyw20706ua1kffb4g_firmware	—	cpe:2.3:o:cypress:cyw20706ua1kffb4g_firmware:-:::::::*
cypress	cyw20706ua2kffb4g_firmware	—	cpe:2.3:o:cypress:cyw20706ua2kffb4g_firmware:-:::::::*
cypress	cyw20706ua2kffb4gt_firmware	—	cpe:2.3:o:cypress:cyw20706ua2kffb4gt_firmware:-:::::::*
cypress	cyw20707a2kubgt_firmware	—	cpe:2.3:o:cypress:cyw20707a2kubgt_firmware:-:::::::*
cypress	cyw20707ua1kffb1g_firmware	—	cpe:2.3:o:cypress:cyw20707ua1kffb1g_firmware:-:::::::*
cypress	cyw20707ua1kffb4g_firmware	—	cpe:2.3:o:cypress:cyw20707ua1kffb4g_firmware:-:::::::*
cypress	cyw20707ua1kffb4gt_firmware	—	cpe:2.3:o:cypress:cyw20707ua1kffb4gt_firmware:-:::::::*
cypress	cyw20707ua2kffb4g_firmware	—	cpe:2.3:o:cypress:cyw20707ua2kffb4g_firmware:-:::::::*
cypress	cyw20707ua2kffb4gt_firmware	—	cpe:2.3:o:cypress:cyw20707ua2kffb4gt_firmware:-:::::::*
cypress	cyw20707va1pkwbgt_firmware	—	cpe:2.3:o:cypress:cyw20707va1pkwbgt_firmware:-:::::::*
cypress	cyw20707va2pkwbgt_firmware	—	cpe:2.3:o:cypress:cyw20707va2pkwbgt_firmware:-:::::::*
cypress	cyw20730a1kfbg_firmware	—	cpe:2.3:o:cypress:cyw20730a1kfbg_firmware:-:::::::*
cypress	cyw20730a1kfbgt_firmware	—	cpe:2.3:o:cypress:cyw20730a1kfbgt_firmware:-:::::::*
cypress	cyw20730a1kml2g_firmware	—	cpe:2.3:o:cypress:cyw20730a1kml2g_firmware:-:::::::*
cypress	cyw20730a1kml2gt_firmware	—	cpe:2.3:o:cypress:cyw20730a1kml2gt_firmware:-:::::::*
cypress	cyw20730a1kmlg_firmware	—	cpe:2.3:o:cypress:cyw20730a1kmlg_firmware:-:::::::*
cypress	cyw20730a1kmlgt_firmware	—	cpe:2.3:o:cypress:cyw20730a1kmlgt_firmware:-:::::::*
cypress	cyw20730a2kfbg_firmware	—	cpe:2.3:o:cypress:cyw20730a2kfbg_firmware:-:::::::*
cypress	cyw20730a2kfbgt_firmware	—	cpe:2.3:o:cypress:cyw20730a2kfbgt_firmware:-:::::::*
cypress	cyw20730a2kml2g_firmware	—	cpe:2.3:o:cypress:cyw20730a2kml2g_firmware:-:::::::*
cypress	cyw20730a2kml2gt_firmware	—	cpe:2.3:o:cypress:cyw20730a2kml2gt_firmware:-:::::::*
cypress	cyw20733a1kfb1gt_firmware	—	cpe:2.3:o:cypress:cyw20733a1kfb1gt_firmware:-:::::::*
cypress	cyw20733a2kfb1g_firmware	—	cpe:2.3:o:cypress:cyw20733a2kfb1g_firmware:-:::::::*
cypress	cyw20733a2kfb1gt_firmware	—	cpe:2.3:o:cypress:cyw20733a2kfb1gt_firmware:-:::::::*
cypress	cyw20733a2kml1g_firmware	—	cpe:2.3:o:cypress:cyw20733a2kml1g_firmware:-:::::::*
cypress	cyw20733a2kml1gt_firmware	—	cpe:2.3:o:cypress:cyw20733a2kml1gt_firmware:-:::::::*
cypress	cyw20733a3kfb1g_firmware	—	cpe:2.3:o:cypress:cyw20733a3kfb1g_firmware:-:::::::*
cypress	cyw20733a3kfb1gt_firmware	—	cpe:2.3:o:cypress:cyw20733a3kfb1gt_firmware:-:::::::*
cypress	cyw20733a3kfb2gt_firmware	—	cpe:2.3:o:cypress:cyw20733a3kfb2gt_firmware:-:::::::*
cypress	cyw20733a3kml1g_firmware	—	cpe:2.3:o:cypress:cyw20733a3kml1g_firmware:-:::::::*
cypress	cyw20733a3kml1gt_firmware	—	cpe:2.3:o:cypress:cyw20733a3kml1gt_firmware:-:::::::*
cypress	cyw20734ua1kffb3g_firmware	—	cpe:2.3:o:cypress:cyw20734ua1kffb3g_firmware:-:::::::*
cypress	cyw20734ua1kffb3gt_firmware	—	cpe:2.3:o:cypress:cyw20734ua1kffb3gt_firmware:-:::::::*
cypress	cyw20734ua2kffb3g_firmware	—	cpe:2.3:o:cypress:cyw20734ua2kffb3g_firmware:-:::::::*
cypress	cyw20734ua2kffb3gt_firmware	—	cpe:2.3:o:cypress:cyw20734ua2kffb3gt_firmware:-:::::::*
cypress	cyw43438kubgt_firmware	—	cpe:2.3:o:cypress:cyw43438kubgt_firmware:-:::::::*
cypress	cyw4343w1kubgt_firmware	—	cpe:2.3:o:cypress:cyw4343w1kubgt_firmware:-:::::::*
cypress	cyw4343wkubgt_firmware	—	cpe:2.3:o:cypress:cyw4343wkubgt_firmware:-:::::::*
cypress	cyw4343wkwbgt_firmware	—	cpe:2.3:o:cypress:cyw4343wkwbgt_firmware:-:::::::*
cypress	cyw4354kkwbgt_firmware	—	cpe:2.3:o:cypress:cyw4354kkwbgt_firmware:-:::::::*
cypress	cyw4354xkubgt_firmware	—	cpe:2.3:o:cypress:cyw4354xkubgt_firmware:-:::::::*
cypress	cyw89071a1cubxgt_firmware	—	cpe:2.3:o:cypress:cyw89071a1cubxgt_firmware:-:::::::*
cypress	cyw89072brfb5g_firmware	—	cpe:2.3:o:cypress:cyw89072brfb5g_firmware:-:::::::*
cypress	cyw89072brfb5gt_firmware	—	cpe:2.3:o:cypress:cyw89072brfb5gt_firmware:-:::::::*
cypress	cyw89335l2cubgt_firmware	—	cpe:2.3:o:cypress:cyw89335l2cubgt_firmware:-:::::::*
cypress	cyw89335lcubgt_firmware	—	cpe:2.3:o:cypress:cyw89335lcubgt_firmware:-:::::::*

References for CVE-2018-19860

URL	Tags
http://seclists.org/fulldisclosure/2019/Aug/11
http://seclists.org/fulldisclosure/2019/Jul/22
https://seclists.org/bugtraq/2019/Aug/21
https://source.android.com/security/bulletin/2019-05-01	Third Party Advisory
https://support.apple.com/kb/HT210348
https://www.broadcom.com/support/resources/product-security-center	Vendor Advisory

URL

CVE-2018-19860

Exploit prediction scoring system (EPSS) score for CVE-2018-19860

Common vulnerability scoring system (CVSS) metrics for CVE-2018-19860

Weakness enumeration for CVE-2018-19860

Affected software / configurations for CVE-2018-19860

References for CVE-2018-19860