CVE-2019-1765

Cisco IP Phone 8800 Series Path Traversal Vulnerability

HIGH
8.1
CVSS Score
Published: March 22, 2019 at 08:05 PM UTC
Updated: June 17, 2026 at 02:29 AM UTC
11 products affected across 1 vendorIP Phone 8821 FirmwareIP Conference Phone 8832 FirmwareIP Phone 8800 Firmware

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Severity
HIGH8.1
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 8800 Series could allow an authenticated, remote attacker to write arbitrary files to the filesystem. The vulnerability is due to insufficient input validation and file-level permissions. An attacker could exploit this vulnerability by uploading invalid files to an affected device. A successful exploit could allow the attacker to write files in arbitrary locations on the filesystem. This vulnerability affects Cisco IP Phone 8800 Series products running a SIP Software release prior to 11.0(5) for Wireless IP Phone 8821 and 8821-EX; and 12.5(1)SR1 for the IP Conference Phone 8832 and the rest of the IP Phone 8800 Series.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 12.5(1)sr1
Affected range stops below 12.5(1)sr1, so it looks safe — our inference, not a vendor statement
cisco-ip-conference-phone-8832 (same device)
v < 12.5(1)sr1
Affected range stops below 12.5(1)sr1, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-8800 (same device)
v < 11.0(5)
Affected range stops below 11.0(5), so it looks safe — our inference, not a vendor statement
cisco-ip-phone-8821-ex (same device)
v < 11.0(5)
Affected range stops below 11.0(5), so it looks safe — our inference, not a vendor statement
cisco-ip-phone-8821 (same device)
v < 12.5(1)SR1
Affected range stops below 12.5(1)SR1, so it looks safe — our inference, not a vendor statement
v < 12.5(1)SR1
Affected range stops below 12.5(1)SR1, so it looks safe — our inference, not a vendor statement
v < 11.0(5)
Affected range stops below 11.0(5), so it looks safe — our inference, not a vendor statement
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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