CVE-2026-20067
5.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 detection engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when parsing the Multicast DNS fields of the HTTP header. 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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cisco | Cisco Cyber Vision | 3.0.0 | affected |
| Cisco | Cisco Cyber Vision | 3.0.2 | affected |
| Cisco | Cisco Cyber Vision | 3.0.3 | affected |
| Cisco | Cisco Cyber Vision | 3.0.1 | affected |
| Cisco | Cisco Cyber Vision | 3.1.0 | affected |
| Cisco | Cisco Cyber Vision | 3.0.4 | affected |
| Cisco | Cisco Cyber Vision | 3.1.1 | affected |
| Cisco | Cisco Cyber Vision | 3.1.2 | affected |
| Cisco | Cisco Cyber Vision | 3.2.0 | affected |
| Cisco | Cisco Cyber Vision | 3.0.5 | affected |
| Cisco | Cisco Cyber Vision | 3.2.1 | affected |
| Cisco | Cisco Cyber Vision | 3.0.6 | affected |
| Cisco | Cisco Cyber Vision | 3.2.2 | affected |
| Cisco | Cisco Cyber Vision | 3.2.3 | affected |
| Cisco | Cisco Cyber Vision | 3.2.4 | affected |
| Cisco | Cisco Cyber Vision | 4.0.0 | affected |
| Cisco | Cisco Cyber Vision | 4.0.1 | affected |
| Cisco | Cisco Cyber Vision | 4.0.2 | affected |
| Cisco | Cisco Cyber Vision | 4.0.3 | affected |
| Cisco | Cisco Cyber Vision | 4.1.0 | affected |
| Cisco | Cisco Cyber Vision | 4.1.1 | affected |
| Cisco | Cisco Cyber Vision | 4.1.2 | affected |
| Cisco | Cisco Cyber Vision | 4.1.3 | affected |
| Cisco | Cisco Cyber Vision | 4.1.4 | affected |
| Cisco | Cisco Cyber Vision | 4.2.0 | affected |
| Cisco | Cisco Cyber Vision | 4.2.1 | affected |
| Cisco | Cisco Cyber Vision | 4.1.5 | affected |
| Cisco | Cisco Cyber Vision | 4.2.2 | affected |
| Cisco | Cisco Cyber Vision | 4.2.X | affected |
| Cisco | Cisco Cyber Vision | 4.2.3 | affected |
| Cisco | Cisco Cyber Vision | 4.2.4 | affected |
| Cisco | Cisco Cyber Vision | 4.2.6 | affected |
| Cisco | Cisco Cyber Vision | 4.1.6 | affected |
| Cisco | Cisco Cyber Vision | 4.3.0 | affected |
| Cisco | Cisco Cyber Vision | 4.3.1 | affected |
| Cisco | Cisco Cyber Vision | 4.3.2 | affected |
| Cisco | Cisco Cyber Vision | 4.3.3 | affected |
| Cisco | Cisco Cyber Vision | 4.4.0 | affected |
| Cisco | Cisco Cyber Vision | 4.4.1 | affected |
| Cisco | Cisco Cyber Vision | 4.4.2 | affected |
| Cisco | Cisco Cyber Vision | 4.4.3 | affected |
| Cisco | Cisco Cyber Vision | 4.1.7 | affected |
| Cisco | Cisco Cyber Vision | 5.0.0 | affected |
| Cisco | Cisco Cyber Vision | 5.0.1 | affected |
| Cisco | Cisco Cyber Vision | 5.0.2 | affected |
| Cisco | Cisco Cyber Vision | 5.1.0 | affected |
| Cisco | Cisco Cyber Vision | 5.1.1 | affected |
| Cisco | Cisco Cyber Vision | 5.1.2 | affected |
| Cisco | Cisco Cyber Vision | 5.1.3 | affected |
| Cisco | Cisco Cyber Vision | 5.2.0 | affected |
| Cisco | Cisco Cyber Vision | 5.2.1 | affected |
| Cisco | Cisco Cyber Vision | 5.3.0 | affected |
| Cisco | Cisco Cyber Vision | 5.3.1 | affected |
| Cisco | Cisco Cyber Vision | 5.3.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.0.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.1.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.1.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.1.0.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.2.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.3 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.1.0.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.0.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.4 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.5 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.3.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.3 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.3.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.1.0.3 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.4 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.6 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.5 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.4.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.3.1.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.6.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.5.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.6 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.6.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.1.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.7 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.5.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.3.1.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.8 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.8.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.6.3 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.9 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.7 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.7.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.10 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2.3 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.8 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.7.10 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.8.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.2.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.7.10.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2.4 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.10.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.3 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.2.1r | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.2 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.4.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.5.1 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.3 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.5.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.4 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.4a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.4.2 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.4.1b | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.7.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.2 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.8.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.5 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.3 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.3a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.7.2 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.4 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.10.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.6 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.7 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.2a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.5 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.11.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.3a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.4 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.6 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.8 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.8a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.6a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.4a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.2 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.13.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.5a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.3 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.7 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.14.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.4 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.3a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.15.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.8 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.6 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.6.8a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.16.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.5e | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.4a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.15.2c | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.5f | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.4b | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.15.2a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.5 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.17.1 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.5a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.7a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.15.3a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.15.3 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.5b | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.5c | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.15.4 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.7b | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.18.1 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.18.1a | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.6 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.9.8 | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.15.4c | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.12.5d | affected |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.18.2 | affected |
Weaknesses
- CWE-787: Out-of-bounds Write
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
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