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Fencer Vulns
critical 9.8

CVE-2019-1937 in the critical feed json

Cisco Integrated Management Controller Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Authentication Bypass Vulnerability

published 2019-08-21 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10494

cvss
9.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
75.9%
EPSS 75.9% chance of exploitation in 30 days, percentile 99.5%
public exploits
2
Metasploit, Exploit-DB

Summary

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 unauthenticated, remote attacker to acquire a valid session token with administrator privileges, bypassing user authentication. The vulnerability is due to insufficient request header validation during the authentication process. An attacker could exploit this vulnerability by sending a series of malicious requests to an affected device. An exploit could allow the attacker to use the acquired session token to gain full administrator access to the affected device.

Patch / fix

  • Cisco Cisco Unified Computing System Director 6.7.3.0

Timeline

  1. First public exploit (Metasploit exploit/linux/http/cisco_ucs_rce)
  2. Published

Exploit prediction

75.86% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/linux/http/cisco_ucs_rce Cisco UCS Director Unauthenticated Remote Code Execution metasploit exploit, excellent rank, 2019-08-21
  • EDB-51589 Cisco UCS-IMC Supervisor 2.2.0.0 - Authentication Bypass webapps, 2023-07-15
  • packetstormsecurity.com http://packetstormsecurity.com/files/154239/Cisco-UCS-IMC-Supervisor-Authentication-Bypass-Command-Injection.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Cisco Cisco Unified Computing System Director

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.