NVD

CVE-2025-20350 Detail

Description

A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco SIP Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to a buffer overflow when an affected device processes HTTP packets. An attacker could exploit this vulnerability by sending crafted HTTP input to the device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: To exploit this vulnerability, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 7.5 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-dos-FPyjLV7A	Cisco Systems, Inc.	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-121	Stack-based Buffer Overflow	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Initial Analysis by NIST 12/04/2025 4:29:46 PM

Action	Type	New Value
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:desk_phone_9841_firmware::::::::* versions from (including) 3.0(1) up to (including) 3.2(1) OR cpe:2.3:h:cisco:desk_phone_9841:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:desk_phone_9851_firmware::::::::* versions from (including) 3.0(1) up to (including) 3.2(1) OR cpe:2.3:h:cisco:desk_phone_9851:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:desk_phone_9861_firmware::::::::* versions from (including) 3.0(1) up to (including) 3.2(1) OR cpe:2.3:h:cisco:desk_phone_9861:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:desk_phone_9871_firmware::::::::* versions from (including) 3.0(1) up to (including) 3.2(1) OR cpe:2.3:h:cisco:desk_phone_9871:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_7811_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_7811_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_7811_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_7811:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_7821_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_7821_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_7821_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_7821:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_7841_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_7841_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_7841_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_7841:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_7861_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_7861_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_7861_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_7861:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_8811_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_8811_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_8811_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_8811:-:::::::*
Added	CPE Configuration	Record truncated, showing 2048 of 2090 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(1)::::::: cpe:2.3:o:cisco:ip_phone_8821_firmware::::::::* versions up to (excluding) 11.0(1) cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(0.7):mpp::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(2)::::::: cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(2):sr1::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(2):sr2::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(3)::::::: cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(3):sr1::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(3):sr2::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(3):sr3::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(3):sr4::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(3):sr5::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(3):sr6::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(4)::::::: cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(4):sr1::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(4):sr2::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(4):sr3::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(5)::::::: cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(5):sr1::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(5):sr2::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(5):sr3::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(6)::::::: cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(6):sr1::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(6):sr2::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(6):sr4::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(6):sr5::::::* cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0(6):sr6::::::* OR cpe
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_8832_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_8832_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_8832_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_8832:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_8841_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_8841_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_8841_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_8841:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_8845_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_8845_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_8845_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_8845:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_8851_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_8851_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_8851_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_8851:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_8861_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_8861_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_8861_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_8861:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:ip_phone_8865_firmware:14.3(1)::::::: cpe:2.3:o:cisco:ip_phone_8865_firmware::::::::* versions up to (excluding) 14.3(1) cpe:2.3:o:cisco:ip_phone_8865_firmware:14.3(1):sr1::::::* OR cpe:2.3:h:cisco:ip_phone_8865:-:::::::*
Added	CPE Configuration	AND OR cpe:2.3:o:cisco:video_phone_8875_firmware::::::::* versions up to (excluding) 2.3(1) cpe:2.3:o:cisco:video_phone_8875_firmware::::::::* versions from (including) 3.0(1) up to (including) 3.2(1) cpe:2.3:o:cisco:video_phone_8875_firmware:2.3(1)::::::: cpe:2.3:o:cisco:video_phone_8875_firmware:2.3(1):sr1::::::* OR cpe:2.3:h:cisco:video_phone_8875:-:::::::*
Added	Reference Type	Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-dos-FPyjLV7A Types: Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2025-20350
NVD Published Date:
10/15/2025
NVD Last Modified:
12/04/2025
Source:
Cisco Systems, Inc.

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