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CVE-2019-1937

86
FAUCET Score

CVE-2019-1937 is a critical authentication bypass vulnerability affecting the web-based management interfaces of Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data. This flaw allows an unauthenticated, remote attacker to acquire a valid administrator session token due to insufficient request header validation. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network with low attack complexity, leading to full administrator access and complete system compromise. While not listed in CISA's KEV catalog, public exploit code exists, including a Metasploit module and an ExploitDB entry, indicating a high potential for exploitation. The CVE has garnered significant community attention and media coverage, underscoring its severity and the need for immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.2.0.3, <= 2.2.0.6CPE matchmatch criteria
cpe:2.3:a:cisco:integrated_management_controller_supervisor:*:*:*:*:*:*:*:*
>= 6.6.0.0, <= 6.6.1.0CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director:*:*:*:*:*:*:*:*
>= 6.7.0.0, <= 6.7.1.0CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director:*:*:*:*:*:*:*:*
6.7\(0.0.67265\)CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director:6.7\(0.0.67265\):*:*:*:*:*:*:*
>= 3.7.0.0, <= 3.7.1.0CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director_express_for_big_data:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
75.86%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Cisco UCS Director Unauthenticated Remote Code Execution · Aug 21, 2019
ExploitDB: EDB-51589 · Jul 15, 2023
This CVE's current EPSS score of 0.7586 is in the 98th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

packetstormsecurity.com / files/154239/Cisco-UCS-IMC-Supervisor-Authentication-Bypass-Command-Injection.html
ExploitThird Party Advisory
packetstormsecurity.com / files/154308/Cisco-UCS-Director-Unauthenticated-Remote-Code-Execution.html
packetstormsecurity.com / files/173531/Cisco-UCS-IMC-Supervisor-2.2.0.0-Authentication-Bypass.html
seclists.org / fulldisclosure/2019/Aug/36
seclists.org / bugtraq/2019/Aug/49
Third Party Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-authby
Vendor Advisory