# Cisco Session Initiation Protocol (SIP) Software.

Every CVE that names Cisco Session Initiation Protocol (SIP) Software among its affected products, newest first. Vendors and products are as the CNA wrote them.

## Records, newest first

- [Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Denial of Service Vulnerability](https://agentprime.io/advisories/CVE-2026-20281.md)
  `CVE-2026-20281` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 7.5 High · Not analysed yet · Published 2 Sept 2026 · Tags: Denial of service
- [Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Cross-Site Scripting Vulnerability](https://agentprime.io/advisories/CVE-2025-20351.md)
  `CVE-2025-20351` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 6.1 Medium · Not analysed yet · Published 15 Oct 2025 · Tags: Cross-site scripting (XSS)
- [Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Denial of Service Vulnerability](https://agentprime.io/advisories/CVE-2025-20350.md)
  `CVE-2025-20350` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 7.5 High · Not analysed yet · Published 15 Oct 2025 · Tags: Memory corruption
- [Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Information Arbitrary File Write Vulnerability](https://agentprime.io/advisories/CVE-2025-20335.md)
  `CVE-2025-20335` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 5.3 Medium · Not analysed yet · Published 3 Sept 2025 · Tags: Broken access control
- [Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Information Disclosure Vulnerability](https://agentprime.io/advisories/CVE-2025-20336.md)
  `CVE-2025-20336` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 5.3 Medium · Not analysed yet · Published 3 Sept 2025 · Tags: Information disclosure
- [Cisco Video Phone 8875 and Desk Phone 9800 Series Information Disclosure Vulnerability](https://agentprime.io/advisories/CVE-2025-20158.md)
  `CVE-2025-20158` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 4.4 Medium · Not analysed yet · Published 19 Feb 2025 · Tags: Information disclosure
- [Cisco IP Phones Cisco Discovery Protocol and Link Layer Discovery Protocol Remote Code Execution and Denial of Service Vulnerabilities](https://agentprime.io/advisories/CVE-2021-1379.md)
  `CVE-2021-1379` · CVE record: Cisco Cisco IP Phones with Multiplatform Firmware and 2 more · CVSS 6.5 Medium · Not analysed yet · Published 18 Nov 2024 · Tags: Memory corruption
- [Cisco IP Phone 6800, 7800, 8800, and 9800 Series with Multiplatform Firmware Stored Cross-Site Scripting Vulnerability](https://agentprime.io/advisories/CVE-2024-20534.md)
  `CVE-2024-20534` · CVE record: Cisco Cisco IP Phones with Multiplatform Firmware and 1 more · CVSS 4.8 Medium · Not analysed yet · Published 6 Nov 2024 · Tags: Cross-site scripting (XSS)
- [Cisco IP Phone 6800, 7800, 8800, and 9800 Series with Multiplatform Firmware Stored Cross-Site Scripting Vulnerabilities](https://agentprime.io/advisories/CVE-2024-20533.md)
  `CVE-2024-20533` · CVE record: Cisco Cisco IP Phones with Multiplatform Firmware and 1 more · CVSS 4.8 Medium · Not analysed yet · Published 6 Nov 2024 · Tags: Cross-site scripting (XSS)
- [Cisco IP Phone 7800, 8800, and 9800 Series Information Disclosure Vulnerability](https://agentprime.io/advisories/CVE-2024-20445.md)
  `CVE-2024-20445` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 5.3 Medium · Not analysed yet · Published 6 Nov 2024 · Tags: Information disclosure
- [Cross-site scripting in Cisco IP Phones with Multiplatform Firmware and others](https://agentprime.io/advisories/CVE-2023-20265.md)
  `CVE-2023-20265` · CVE record: Cisco Cisco IP Phones with Multiplatform Firmware and 1 more · CVSS 5.5 Medium · Not analysed yet · Published 21 Nov 2023 · Tags: Cross-site scripting (XSS)
- [Authentication bypass in Cisco Session Initiation Protocol (SIP) Software](https://agentprime.io/advisories/CVE-2023-20018.md)
  `CVE-2023-20018` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 8.6 High · Not analysed yet · Published 19 Jan 2023 · Tags: Authentication bypass
- [Out-of-bounds write in Cisco Session Initiation Protocol (SIP) Software](https://agentprime.io/advisories/CVE-2022-20968.md)
  `CVE-2022-20968` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 8.1 High · Not analysed yet · Published 8 Dec 2022 · Tags: Memory corruption
- [Cisco IP Phones Information Disclosure Vulnerability](https://agentprime.io/advisories/CVE-2022-20660.md)
  `CVE-2022-20660` · CVE record: Cisco Cisco Session Initiation Protocol (SIP) Software · CVSS 4.6 Medium · Not analysed yet · Published 14 Jan 2022 · Tags: Information disclosure

## Filters and formats

Filters are query parameters on this URL: `q` (words, as in a web search engine: `"a phrase"`, `OR`, `-word`; an id; a package or product name), `severity` (low, medium, high or critical), `critical=1`, `kev=1`, `ecosystem` (npm, pypi, packagist, go, maven, rubygems, crates, nuget, hex), `kind=package`, `assigner` (a CNA’s short name), `min_score` and `state`. Each record’s title links to its Markdown page.

- The same list as JSON: <https://api.agentprime.io/v1/advisories?technology=cisco-session-initiation-protocol-sip-software>
- Every list: <https://agentprime.io/advisories.md>, critical: <https://agentprime.io/advisories/critical.md>; by weakness: <https://agentprime.io/advisories/tag/sql-injection.md> and the other tags in <https://agentprime.io/llms.txt>; by technology: `/advisories/technology/<slug>.md` (`fortinet-fortimail`)

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The web page: <https://agentprime.io/advisories/technology/cisco-session-initiation-protocol-sip-software/>. Everything for agents: <https://agentprime.io/llms.txt>.