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CVE-2023-20018

MEDIUM
6.5
CVSS Score
Published: January 19, 2023 at 01:35 AM UTC
Updated: June 17, 2026 at 05:29 AM UTC
45 products affected across 1 vendorIP Phone 8861 FirmwareIP Phone 8865 FirmwareIP Phone 8811 Firmware

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%

Description

A vulnerability in the web-based management interface of Cisco IP Phone 7800 and 8800 Series Phones could allow an unauthenticated, remote attacker to bypass authentication on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to access certain parts of the web interface that would normally require authentication.

Affected

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

IP Phone 7800 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-7800 (same device)
IP Phone 7811 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-7811 (same device)
IP Phone 7821 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-7821 (same device)
IP Phone 7832 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-7832 (same device)
IP Phone 7841 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-7841 (same device)
IP Phone 7861 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-7861 (same device)
IP Phone 8800 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-8800 (same device)
IP Phone 8811 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-8811 (same device)
IP Phone 8821-ex Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-8821-ex (same device)
IP Phone 8821 Firmware· Cisco
95%
v < 14.1(1)sr2
Affected range stops below 14.1(1)sr2, so it looks safe — our inference, not a vendor statement
cisco-ip-phone-8821 (same device)

Remediation

No guide yet

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

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ip-phone-auth-bypass-pSqxZRPR

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-288CWE-863

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