Cisco IP Phone 7800 and 8800 Series Session Initiation Protocol Denial of Service Vulnerability
Priority LOW 36CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
A vulnerability in Cisco SIP IP Phone Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to insufficient validation of input Session Initiation Protocol (SIP) packets. An attacker could exploit this vulnerability by altering the SIP replies that are sent to the affected phone during the registration process. A successful exploit could allow the attacker to cause the phone to reboot and not complete the registration process.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01317 70th percentileScored 2026-11-07
Fix Fixed Cisco IP Phone 8800 Series Software (Cisco): 12.0(1)MN130
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco IP Phone 8800 Series Software | before 12.0(1)MN130 | 12.0(1)MN130 | Patch available | CNA |
- Cisco IP Phone 8800 Series Software VendorCisco Affected before 12.0(1)MN130 Fixed in 12.0(1)MN130 Patch available CNA
CPE configurations NVD · 31
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_conference_phone_7832:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:11.5\(1\):*:*:*:*:*:*:* | 11.5(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:12.5\(1\):*:*:*:*:*:*:* | 12.5(1) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_conference_phone_8832:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_7811_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_7811:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_7821_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_7821:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_7841_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_conference_phone_7832:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:11.5\(1\):*:*:*:*:*:*:* Versions 11.5(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:12.5\(1\):*:*:*:*:*:*:* Versions 12.5(1) Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_conference_phone_8832:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_7811_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_7811:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_7821_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_7821:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_7841_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
Show 21 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:cisco:ip_phone_7841:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_7861_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_7861:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_8811_firmware:11.5\(1\):*:*:*:*:*:*:* | 11.5(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ip_phone_8811_firmware:12.5\(1\):*:*:*:*:*:*:* | 12.5(1) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_8811:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_8841_firmware:11.5\(1\):*:*:*:*:*:*:* | 11.5(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ip_phone_8841_firmware:12.5\(1\):*:*:*:*:*:*:* | 12.5(1) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_8841:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_8845_firmware:11.5\(1\):*:*:*:*:*:*:* | 11.5(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ip_phone_8845_firmware:12.5\(1\):*:*:*:*:*:*:* | 12.5(1) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_8845:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_8851_firmware:11.5\(1\):*:*:*:*:*:*:* | 11.5(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ip_phone_8851_firmware:12.5\(1\):*:*:*:*:*:*:* | 12.5(1) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_8851:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_8861_firmware:11.5\(1\):*:*:*:*:*:*:* | 11.5(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ip_phone_8861_firmware:12.5\(1\):*:*:*:*:*:*:* | 12.5(1) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_8861:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:ip_phone_8865_firmware:11.5\(1\):*:*:*:*:*:*:* | 11.5(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ip_phone_8865_firmware:12.5\(1\):*:*:*:*:*:*:* | 12.5(1) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:ip_phone_8865:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:h:cisco:ip_phone_7841:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_7861_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_7861:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_8811_firmware:11.5\(1\):*:*:*:*:*:*:* Versions 11.5(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:ip_phone_8811_firmware:12.5\(1\):*:*:*:*:*:*:* Versions 12.5(1) Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_8811:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_8841_firmware:11.5\(1\):*:*:*:*:*:*:* Versions 11.5(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:ip_phone_8841_firmware:12.5\(1\):*:*:*:*:*:*:* Versions 12.5(1) Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_8841:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_8845_firmware:11.5\(1\):*:*:*:*:*:*:* Versions 11.5(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:ip_phone_8845_firmware:12.5\(1\):*:*:*:*:*:*:* Versions 12.5(1) Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_8845:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_8851_firmware:11.5\(1\):*:*:*:*:*:*:* Versions 11.5(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:ip_phone_8851_firmware:12.5\(1\):*:*:*:*:*:*:* Versions 12.5(1) Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_8851:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_8861_firmware:11.5\(1\):*:*:*:*:*:*:* Versions 11.5(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:ip_phone_8861_firmware:12.5\(1\):*:*:*:*:*:*:* Versions 12.5(1) Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_8861:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:ip_phone_8865_firmware:11.5\(1\):*:*:*:*:*:*:* Versions 11.5(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:ip_phone_8865_firmware:12.5\(1\):*:*:*:*:*:*:* Versions 12.5(1) Vulnerable ·Cisco
- cpe:2.3:h:cisco:ip_phone_8865:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
- Fix · CNA Cisco IP Phone 8800 Series Software (Cisco) Fixed in 12.0(1)MN130
Timeline
- 2026-10-02 Threatist record created from CVE-2019-1922
- 2026-10-03 Alias added: GHSA-996r-f8xw-6h6p
References
More Cisco Ip Conference Phone 7832 Firmware vulnerabilities
- TI-2020-02673 Cisco IP Phone Remote Code Execution and Denial of Service Vulnerability CVSS 3.1HIGH 8.8
- TI-2019-01261 Cisco IP Phone 7800 Series and 8800 Series Session Initiation Protocol XML Denial of Service Vulnerability CVSS 3.1HIGH 7.5
- TI-2024-13373 Cisco IP Phone 7800, 8800, and 9800 Series Information Disclosure Vulnerability CVSS 3.1MEDIUM 5.3
- TI-2019-01310 Resource management flaw in Cisco IP Phone 8800 Series Software CVSS 3.1MEDIUM 6.5
- TI-2021-01106 Buffer overflow in Cisco IP Phones with Multiplatform Firmware CVSS 3.1MEDIUM 6.5
- TI-2021-13711 Cisco IP Phone Software Arbitrary File Read Vulnerability CVSS 3.1MEDIUM 5.5
Sources
- CVE-2019-1922 · CVE Program
- CVE-2019-1922 · NVD
- FIRST EPSS
- GHSA-996r-f8xw-6h6p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences