CVE-2019-1854

CVE-2019-1854 is a medium-severity vulnerability in Cisco Telepresence Video Communication Server with a CVSS 3.x base score of 4.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

• Severity: Medium (CVSS 3.x base score 4.1)
• CVSS v2: 4.0
• EPSS exploit prediction: 4% (89th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-22
• Affected product: Cisco Telepresence Video Communication Server
• Published: 2019-05-03
• Last modified: 2026-06-17

Description

A vulnerability in the management web interface of Cisco Expressway Series could allow an authenticated, remote attacker to perform a directory traversal attack against an affected device. The vulnerability is due to insufficient input validation on the web interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web interface. A successful exploit could allow the attacker to bypass security restrictions and access the web interface of a Cisco Unified Communications Manager associated with the affected device. Valid credentials would still be required to access the Cisco Unified Communications Manager interface.

Frequently asked questions

What is CVE-2019-1854?

A vulnerability in the management web interface of Cisco Expressway Series could allow an authenticated, remote attacker to perform a directory traversal attack against an affected device. The vulnerability is due to insufficient input validation on the web interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web interface. A successful exploit could allow the attacker to bypass security restrictions and access the web interface of a Cisco Unified Communications Manager associated with the affected device. Valid credentials would still be required to access the Cisco Unified Communications Manager interface.

How severe is CVE-2019-1854?

CVE-2019-1854 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2019-1854 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-1854?

CVE-2019-1854 affects Cisco Telepresence Video Communication Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-1854?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-1854 published?

CVE-2019-1854 was published on 2019-05-03 and last updated on 2026-06-17.

References

• http://packetstormsecurity.com/files/152963/Cisco-Expressway-Gateway-11.5.1-Directory-Traversal.html
• http://seclists.org/fulldisclosure/2019/May/28
• http://www.securityfocus.com/bid/108154
• https://seclists.org/bugtraq/2019/May/49
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-expressway-traversal

Affected products (1)

• cpe:2.3:a:cisco:telepresence_video_communication_server:x8.11.4:*:*:*:*:*:*:*

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