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CVE-2019-1867

Cisco Elastic Services Controller REST API Authentication Bypass Vulnerability

CRITICAL
10
CVSS Score
Published: May 10, 2019 at 12:05 PM UTC
Updated: June 17, 2026 at 02:29 AM UTC
1 product affected across 1 vendorElastic Services Controller

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Severity
CRITICAL10
Exploit prediction
EPSS 30%
SSVC
No known exploit

Description

A vulnerability in the REST API of Cisco Elastic Services Controller (ESC) could allow an unauthenticated, remote attacker to bypass authentication on the REST API. The vulnerability is due to improper validation of API requests. An attacker could exploit this vulnerability by sending a crafted request to the REST API. A successful exploit could allow the attacker to execute arbitrary actions through the REST API with administrative privileges on an affected system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Elastic Services Controller· Cisco
95%
v < 4.1.0.100v < 4.2.0.74v < 4.3.0.121v < 4.4.0.804.1 ≤ v < 4.5
Affected range stops below 4.1.0.100, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2.0.74, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.3.0.121, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.0.80, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisoryx_refsource_CISCO
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190507-esc-authbypass

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

10CRITICALcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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