CVE-2025-20350
published 2025-10-15CVE-2025-20350: 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…
PriorityP348high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.45%
36.1th percentile
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.
Affected
134 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
| cisco | cisco_session_initiation_protocol_software | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_cisco7.5HIGH
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Cisco
Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities
vendor_cisco·2025-10-15·CVSS 7.5
CVE-2025-20350 [HIGH] CWE-121 Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities
Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities
Multiple vulnerabilities in Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco Session Initiation Protocol (SIP) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or conduct a cross-site scripting (XSS) attack against a user of the web UI.
Note: To exploit these vulnerabilities, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default.
For more information about these vulnerabilities, see the Details section of this advisory.
Cisco has released software updates that address these vulnerabilitie
Cisco
Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities
vendor_cisco·CVSS 3.1
CVE-2025-20350 Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities
CVE-2025-20350: Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities
Multiple vulnerabilities in Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco Session Initiation Protocol (SIP) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or conduct a cross-site scripting (XSS) attack against a user of the web UI. Note: To exploit these vulnerabilities, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default. For more information about these vulnerabilities, see the
CVSS: 3.1
CWE: CWE-121, CWE-79, CWE-121, CWE-79
Bug IDs: CSCwn51601, CSCwn51683, CSCwn58
GHSA
GHSA-c6wg-233f-cjj6: 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 Softw
ghsa_unreviewed·2025-10-15
CVE-2025-20350 [HIGH] CWE-121 GHSA-c6wg-233f-cjj6: 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 Softw
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-10-15
Published