CVE-2019-1935 | Cisco Integrated Management Controller Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data SCP User Default Credentials Vulnerability

Exp

A vulnerability in Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data could allow an unauthenticated, remote attacker to log in to the CLI of an affected system by using the SCP User account (scpuser), which has default user credentials. The vulnerability is due to the presence of a documented default account with an undocumented default password and incorrect permission settings for that account. Changing the default password for this account is not enforced during the installation of the product. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to execute arbitrary commands with the privileges of the scpuser account. This includes full read and write access to the system's database.

Published: 2019-08-21 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-1935 is rated High Exploit Risk (91.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 89.11%, 99th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.91% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-1935

EDB-ID Source Kind Published Link
47346 exploit_db edb 2019-09-03 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-1935

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 86.20% 89.11% +2.91%
2 2025-11-18 89.11% 86.20% -2.91%
3 2025-09-20 — 89.11% —

Full EPSS history (37 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-1935

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/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: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.
 3.9 5.9 [email protected]
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/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: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.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/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:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2019-1935

Affected software / configurations for CVE-2019-1935

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-2019-1935

cvelogic Threat Intelligence