# CVE-2025-20360

## Summary

- **CVE ID:** CVE-2025-20360
- **Severity:** MEDIUM
- **CVSS Score:** 5.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L)
- **CWE:** CWE-805
- **Published:** Oct 15, 2025
- **Last Modified:** Mar 12, 2026

## Description

Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart.

This vulnerability is due to a lack of complete error checking when the MIME fields of the HTTP header are parsed. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.

## Affected Products

- Cisco — Cisco Cyber Vision (4.3.0)
- Cisco — Cisco Cyber Vision (4.3.1)
- Cisco — Cisco Cyber Vision (4.3.2)
- Cisco — Cisco Cyber Vision (3.0.0)
- Cisco — Cisco Cyber Vision (3.0.2)
- Cisco — Cisco Cyber Vision (3.0.3)
- Cisco — Cisco Cyber Vision (3.0.1)
- Cisco — Cisco Cyber Vision (3.1.0)
- Cisco — Cisco Cyber Vision (3.0.4)
- Cisco — Cisco Cyber Vision (3.1.1)
- Cisco — Cisco Cyber Vision (3.1.2)
- Cisco — Cisco Cyber Vision (3.2.0)
- Cisco — Cisco Cyber Vision (3.0.5)
- Cisco — Cisco Cyber Vision (3.2.1)
- Cisco — Cisco Cyber Vision (3.0.6)
- Cisco — Cisco Cyber Vision (3.2.2)
- Cisco — Cisco Cyber Vision (3.2.3)
- Cisco — Cisco Cyber Vision (3.2.4)
- Cisco — Cisco Cyber Vision (4.0.0)
- Cisco — Cisco Cyber Vision (4.0.1)
- Cisco — Cisco Cyber Vision (4.0.2)
- Cisco — Cisco Cyber Vision (4.0.3)
- Cisco — Cisco Cyber Vision (4.1.0)
- Cisco — Cisco Cyber Vision (4.1.1)
- Cisco — Cisco Cyber Vision (4.1.2)
- Cisco — Cisco Cyber Vision (4.1.3)
- Cisco — Cisco Cyber Vision (4.1.4)
- Cisco — Cisco Cyber Vision (4.2.0)
- Cisco — Cisco Cyber Vision (4.2.1)
- Cisco — Cisco Cyber Vision (4.1.5)
- Cisco — Cisco Cyber Vision (4.2.2)
- Cisco — Cisco Cyber Vision (4.2.X)
- Cisco — Cisco Cyber Vision (4.2.3)
- Cisco — Cisco Cyber Vision (4.2.4)
- Cisco — Cisco Cyber Vision (4.2.6)
- Cisco — Cisco Cyber Vision (4.1.6)
- Cisco — Cisco Cyber Vision (4.3.3)
- Cisco — Cisco Cyber Vision (4.4.0)
- Cisco — Cisco Cyber Vision (4.4.1)
- Cisco — Cisco Cyber Vision (4.4.2)
- Cisco — Cisco Cyber Vision (4.4.3)
- Cisco — Cisco Cyber Vision (4.1.7)
- Cisco — Cisco Cyber Vision (5.0.0)
- Cisco — Cisco Cyber Vision (5.0.1)
- Cisco — Cisco Cyber Vision (5.0.2)
- Cisco — Cisco Cyber Vision (5.1.0)
- Cisco — Cisco Cyber Vision (5.1.1)
- Cisco — Cisco Cyber Vision (5.1.2)
- Cisco — Cisco Cyber Vision (5.1.3)
- Cisco — Cisco Cyber Vision (5.2.0)
- Cisco — Cisco Cyber Vision (5.2.1)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.3.0)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.3.1)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.3.1.1)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.4.0)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.4.1)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.4.1.1)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.3.1.2)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.6.0)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.4.2)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.4.2.1)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.7.0)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.4.2.2)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.6.1)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.4.2.3)
- Cisco — Cisco Secure Firewall Threat Defense (FTD) Software (7.4.2.4)

## References

- [CNA](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-tTL8PgVH)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 28.9

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._