# Cisco Open Source Snort3.

Every CVE that names Cisco Open Source Snort3 among its affected products, newest first. Vendors and products are as the CNA wrote them.

## Records, newest first

- [Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability](https://agentprime.io/advisories/CVE-2026-76524.md)
  `CVE-2026-76524` · CVE record: Cisco Cisco Open Source Snort3 · CVSS 7.8 High · Not analysed yet · Published 21 Oct 2026 · Tags: Authentication bypass
- [Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability](https://agentprime.io/advisories/CVE-2026-76489.md)
  `CVE-2026-76489` · CVE record: Cisco Cisco Open Source Snort3 and 1 more · CVSS 5.8 Medium · Not analysed yet · Published 21 Oct 2026 · Tags: Denial of service
- [Multiple Cisco Products Snort 3 Denial of Service Vulnerability](https://agentprime.io/advisories/CVE-2026-76445.md)
  `CVE-2026-76445` · CVE record: Cisco Cisco Open Source Snort3 and 2 more · CVSS 5.3 Medium · Not analysed yet · Published 21 Oct 2026 · Tags: Denial of service
- [Multiple Cisco Products Snort 3 Software Hardening Release: October 2026](https://agentprime.io/advisories/CVE-2026-20356.md)
  `CVE-2026-20356` · CVE record: Cisco Cisco Cyber Vision and 3 more · CVSS 7.5 High · Not analysed yet · Published 21 Oct 2026 · Tags: Denial of service
- [Multiple Cisco Products Snort 3 Software Hardening Release: October 2026](https://agentprime.io/advisories/CVE-2026-20236.md)
  `CVE-2026-20236` · CVE record: Cisco Cisco Cyber Vision and 3 more · CVSS 7.5 High · Not analysed yet · Published 21 Oct 2026 · Tags: CWE-682
- [Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities](https://agentprime.io/advisories/CVE-2026-20221.md)
  `CVE-2026-20221` · CVE record: Cisco Cisco Cyber Vision and 4 more · CVSS 5.8 Medium · Not analysed yet · Published 21 Oct 2026 · Tags: Memory corruption
- [Multiple Cisco Products Snort 3 Software Hardening Release: October 2026](https://agentprime.io/advisories/CVE-2026-20291.md)
  `CVE-2026-20291` · CVE record: Cisco Cisco Cyber Vision and 3 more · CVSS 7.8 High · Not analysed yet · Published 21 Oct 2026 · Tags: Privilege escalation
- [Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability](https://agentprime.io/advisories/CVE-2026-20197.md)
  `CVE-2026-20197` · CVE record: Cisco Cisco Open Source Snort3 and 2 more · CVSS 5.8 Medium · Not analysed yet · Published 21 Oct 2026 · Tags: Memory corruption
- [Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability](https://agentprime.io/advisories/CVE-2026-20218.md)
  `CVE-2026-20218` · CVE record: Cisco Cisco Open Source Snort3 and 2 more · CVSS 5.8 Medium · Not analysed yet · Published 21 Oct 2026 · Tags: Memory corruption
- [Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities](https://agentprime.io/advisories/CVE-2026-20179.md)
  `CVE-2026-20179` · CVE record: Cisco Cisco Open Source Snort3 and 2 more · CVSS 5.8 Medium · Not analysed yet · Published 21 Oct 2026 · Tags: CWE-128
- [Multiple Cisco Products Snort 3 Software Hardening Release: October 2026](https://agentprime.io/advisories/CVE-2026-20043.md)
  `CVE-2026-20043` · CVE record: Cisco Cisco Cyber Vision and 3 more · CVSS 9.0 Critical · Critical (CVSS 9+) · Not analysed yet · Published 21 Oct 2026 · Tags: Memory corruption
- [Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities](https://agentprime.io/advisories/CVE-2026-20019.md)
  `CVE-2026-20019` · CVE record: Cisco Cisco Open Source Snort3 and 2 more · CVSS 5.8 Medium · Not analysed yet · Published 21 Oct 2026 · Tags: Denial of service
- [Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability](https://agentprime.io/advisories/CVE-2026-20011.md)
  `CVE-2026-20011` · CVE record: Cisco Cisco Open Source Snort3 and 2 more · CVSS 5.8 Medium · Not analysed yet · Published 21 Oct 2026 · Tags: Memory corruption

## 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-open-source-snort3>
- 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-open-source-snort3/>. Everything for agents: <https://agentprime.io/llms.txt>.