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TI-2019-01391 Aliases CVE-2019-1766GHSA-29px-fxx4-vhvc

Cisco IP Phone 8800 Series File Upload Denial of Service Vulnerability

Priority MEDIUM 42CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 8800 Series could allow an unauthenticated, remote attacker to cause high disk utilization, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software does not restrict the maximum size of certain files that can be written to disk. An attacker who has valid administrator credentials for an affected system could exploit this vulnerability by sending a crafted, remote connection request to an affected system. A successful exploit could allow the attacker to write a file that consumes most of the available disk space on the system, causing application functions to operate abnormally and leading to a DoS condition. This vulnerability affects Cisco IP Phone 8800 Series products running a SIP Software release prior to 12.5(1)SR1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01527 74th percentileScored 2026-11-07
Fix Fixed Cisco IP Phone 8800 Series Software (Cisco): 12.5(1)SR1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco IP Phone 8800 Series Softwarebefore 12.5(1)SR112.5(1)SR1Patch availableCNA
  • Cisco IP Phone 8800 Series Software VendorCisco Affected before 12.5(1)SR1 Fixed in 12.5(1)SR1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ip_phone_8800_firmware:*:*:*:*:*:*:*:*before 12.5\(1\)sr1VulnerableCisco
cpe:2.3:h:cisco:ip_phone_8800:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:ip_phone_8800_firmware:*:*:*:*:*:*:*:* Versions before 12.5\(1\)sr1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:ip_phone_8800:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

  • Fix · CNA Cisco IP Phone 8800 Series Software (Cisco) Fixed in 12.5(1)SR1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1766
  2. 2026-10-03 Alias added: GHSA-29px-fxx4-vhvc

References

Advisory 1

  • TI-2019-01342 Cisco IP Phone 7800 Series and 8800 Series Remote Code Execution Vulnerability CVSS 3.0CRITICAL 9.8
  • TI-2018-00284 Improper input validation in Cisco IP Phone 7800 Series and 8800 Series CVSS 3.0HIGH 7.5
  • TI-2019-01388 Cisco IP Phone 8800 Series Authorization Bypass Vulnerability CVSS 3.1HIGH 7.5
  • TI-2019-01389 Cisco IP Phone 8800 Series Cross-Site Request Forgery Vulnerability CVSS 3.0HIGH 8.8
  • TI-2023-06727 Authentication bypass in Cisco Session Initiation Protocol Software CVSS 3.1HIGH 8.6
  • TI-2019-01390 Cisco IP Phone 8800 Series Path Traversal Vulnerability CVSS 3.0HIGH 8.1
See all 8 →

Sources

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