CVE-2019-1936 [High] | Input Validation Bypass in Integrated Management Con…

A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data could allow an authenticated, remote attacker to execute arbitrary commands on the underlying Linux shell as the root user. Exploitation of this vulnerability requires privileged access to an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit this vulnerability by logging in to the web-based management interface with administrator privileges and then sending a malicious request to a certain part of the interface.

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#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	66.27%	39.48%	-26.80%
2	2026-06-06	66.60%	66.27%	-0.33%
3	2026-03-04	—	66.60%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

66.27%

39.48%

-26.80%

2026-06-06

66.60%

66.27%

-0.33%

2026-03-04

—

66.60%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.2	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:H) They need powerful rights—admin, root, or similar—before this pays off. 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.	1.2	5.9	[email protected]
7.2	3.0	HIGH	`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:H) They need powerful rights—admin, root, or similar—before this pays off. 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.	1.2	5.9	[email protected]
9.0	2.0	HIGH	`AV:N/AC:L/Au:S/C:C/I:C/A:C` 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:S) A single authentication is required. Confidentiality impact (C:C) Complete confidentiality impact. Integrity impact (I:C) Complete integrity impact. Availability impact (A:C) Complete availability impact.	8.0	10.0	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.2

3.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:H): They need powerful rights—admin, root, or similar—before this pays off.
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.

1.2

5.9

[email protected]

7.2

3.0

HIGH

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:H): They need powerful rights—admin, root, or similar—before this pays off.
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.

1.2

5.9

[email protected]

9.0

2.0

HIGH

AV:N/AC:L/Au:S/C:C/I:C/A:C 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:S): A single authentication is required.
Confidentiality impact (C:C): Complete confidentiality impact.
Integrity impact (I:C): Complete integrity impact.
Availability impact (A:C): Complete availability impact.

8.0

10.0

[email protected]

Affected software / configurations for CVE-2019-1936

Vendor	Product	Version	Raw CPE
cisco	integrated_management_controller_supervisor	>= 2.2.0.0, <= 2.2.0.6	cpe:2.3:a:cisco:integrated_management_controller_supervisor::::::::
cisco	integrated_management_controller_supervisor	2.1.0.0	cpe:2.3:a:cisco:integrated_management_controller_supervisor:2.1.0.0:::::::*
cisco	ucs_director	6.0.0.0	cpe:2.3:a:cisco:ucs_director:6.0.0.0:::::::*
cisco	ucs_director	6.5.0.0	cpe:2.3:a:cisco:ucs_director:6.5.0.0:::::::*
cisco	ucs_director	6.6.0.0	cpe:2.3:a:cisco:ucs_director:6.6.0.0:::::::*
cisco	ucs_director	6.6.1.0	cpe:2.3:a:cisco:ucs_director:6.6.1.0:::::::*
cisco	ucs_director	6.7\(0.0.67265\)	cpe:2.3:a:cisco:ucs_director:6.7\(0.0.67265\):::::::*
cisco	ucs_director	6.7.0.0	cpe:2.3:a:cisco:ucs_director:6.7.0.0:::::::*
cisco	ucs_director	6.7.1.0	cpe:2.3:a:cisco:ucs_director:6.7.1.0:::::::*
cisco	ucs_director_express_for_big_data	3.0.0.0	cpe:2.3:a:cisco:ucs_director_express_for_big_data:3.0.0.0:::::::*
cisco	ucs_director_express_for_big_data	3.5.0.0	cpe:2.3:a:cisco:ucs_director_express_for_big_data:3.5.0.0:::::::*
cisco	ucs_director_express_for_big_data	3.6.0.0	cpe:2.3:a:cisco:ucs_director_express_for_big_data:3.6.0.0:::::::*
cisco	ucs_director_express_for_big_data	3.7.0.0	cpe:2.3:a:cisco:ucs_director_express_for_big_data:3.7.0.0:::::::*
cisco	ucs_director_express_for_big_data	3.7.1.0	cpe:2.3:a:cisco:ucs_director_express_for_big_data:3.7.1.0:::::::*

References for CVE-2019-1936

URL	Tags
http://packetstormsecurity.com/files/154239/Cisco-UCS-IMC-Supervisor-Authentication-Bypass-Command-Injection.html	Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/154308/Cisco-UCS-Director-Unauthenticated-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2019/Aug/36	Mailing List Third Party Advisory
https://seclists.org/bugtraq/2019/Aug/49	Broken Link Exploit Mailing List Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-cmdinj	Vendor Advisory

URL

CVE-2019-1936 | Cisco Integrated Management Controller Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Command Injection Vulnerability

Public exploit references (Exploit-DB) for CVE-2019-1936

Exploit prediction scoring system (EPSS) score for CVE-2019-1936

Common vulnerability scoring system (CVSS) metrics for CVE-2019-1936

Weakness enumeration for CVE-2019-1936

Affected software / configurations for CVE-2019-1936

References for CVE-2019-1936