Cisco Elastic Services Controller REST API Authentication Bypass Vulnerability
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Elastic Services Controller | before 4.1.0.100; before 4.2.0.74; before 4.3.0.121; before 4.4.0.80 | 4.1.0.100, 4.2.0.74, 4.3.0.121, 4.4.0.80 | Patch available | CNA |
- Cisco Elastic Services Controller VendorCisco Affected before 4.1.0.100; before 4.2.0.74; before 4.3.0.121; before 4.4.0.80 Fixed in 4.1.0.100, 4.2.0.74, 4.3.0.121, 4.4.0.80 Patch available CNA
Remediation
- Fix · CNA Cisco Elastic Services Controller (Cisco) Fixed in 4.1.0.100, 4.2.0.74, 4.3.0.121, 4.4.0.80
Timeline
- 2026-10-02 Threatist record created from CVE-2019-1867
- 2026-10-03 Alias added: GHSA-gfx3-865x-23hf
References
More Cisco Elastic Services Controller vulnerabilities
- TI-2018-00096 Improper authentication in Cisco Elastic Services Controller CVSS 3.0CRITICAL 9.8
- TI-2017-04469 Access control flaw in Cisco Elastic Services Controller CVSS 3.0CRITICAL 9.8
- TI-2017-04439 OS command injection in Cisco Elastic Services Controller CVSS 3.0HIGH 8.8
- TI-2021-01039 Cisco Elastic Services Controller Denial of Service Vulnerability CVSS 3.1HIGH 7.5
- TI-2017-04468 OS command injection in Cisco Elastic Services Controller CVSS 3.0HIGH 8.8
- TI-2017-04444 A vulnerability in Cisco Elastic Services Controllers could allow an authenticated… CVSS 3.0HIGH 8.8
Sources
- CVE-2019-1867 · CVE Program
- CVE-2019-1867 · NVD
- FIRST EPSS
- GHSA-gfx3-865x-23hf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences