Cisco Unity Connection Directory Traversal Vulnerability

published 2020-09-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-24401

cvss: 5.9; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

A vulnerability in the web management interface of Cisco Unity Connection could allow an authenticated remote attacker to overwrite files on the underlying filesystem. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web management interface. A successful exploit could allow the attacker to overwrite files on the underlying filesystem of an affected system. Valid administrator credentials are required to access the system.

Patch / fix

fixed in 1

cisco unity_connection 11.5su7, 12.5su2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-13)

Exploit prediction

1.81% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.9	CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
NVD	2.0	5.5	AV:N/AC:L/Au:S/C:N/I:P/A:P

Affected products

Cisco Cisco Unity Connection

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory
CWE-20 Improper Input Validation

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-cuc-dirtrv-M9HpnME4
vendor-advisory

Sources

CVE List CVE-2020-3130
NVD CVE-2020-3130

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Summary