TI-2020-02816 Aliases CVE-2020-3256 GHSA-j23c-hpx8-w7p9

Cisco Hosted Collaboration Mediation Fulfillment XML External Expansion Vulnerability

LOW 25CWE-611Published 2020-05-06 · Updated 2024-11-15

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-611 and the CVSS impact.

Summary

A vulnerability in the web-based management interface of Cisco Hosted Collaboration Mediation Fulfillment (HCM-F) Software could allow an authenticated, remote attacker to gain read access to information that is stored on an affected system. To exploit this vulnerability, an attacker would need administrative privileges on the Cisco HCM-F Software. The vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by sending malicious requests that contain references in XML entities to an affected system. A successful exploit could allow the attacker to retrieve files from the local system, resulting in the disclosure of sensitive information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01194 68th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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 Hosted Collaboration Mediation Fulfillment	all versions	—	No fix listed	CNA

Cisco Hosted Collaboration Mediation Fulfillment VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:hosted_collaboration_mediation_fulfillment::::::::	before 12.5\(1\)su2	Vulnerable	Cisco

cpe:2.3:a:cisco:hosted_collaboration_mediation_fulfillment:*:*:*:*:*:*:*:* Versions before 12.5\(1\)su2 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-3256
2026-10-03 Alias added: GHSA-j23c-hpx8-w7p9

References

Advisory 1

20200506 Cisco Hosted Collaboration Mediation Fulfillment XML External Expansion Vulnerability

TI-2017-04533 Resource management flaw in Multiple Cisco Products unknown CVSS 3.0HIGH 7.5
TI-2016-05459 Directory traversal vulnerability in the web interface in Cisco Hosted Collaboration… CVSS 3.0HIGH 7.5
TI-2021-01205 Cisco Unified Communications Manager Denial of Service Vulnerability CVSS 3.1MEDIUM 6.5
TI-2020-02686 Cisco Hosted Collaboration Mediation Fulfillment Cross-Site Request Forgery Vulnerability CVSS 3.1MEDIUM 6.5
TI-2018-10961 Cisco Hosted Collaboration Mediation Fulfillment Cross-Site Request Forgery Vulnerability CVSS 3.0MEDIUM 6.5
TI-2016-05536 Cross-site request forgery in Cisco Hosted Collaboration Mediation Fulfillment before 11.5 CVSS 3.0MEDIUM 6.5

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences