5.8
Medium
CVE-2026-76489 Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could…
Description
Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 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 Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Open Source Snort3 3.12 | 3.12.1.0 → 3.12.2.0 | No fix stated |
| Cisco Open Source Snort3 | 3.11.1.0 | No fix stated |
| Cisco Open Source Snort3 3.10 | 3.10.0.0 → 3.10.2.0 | No fix stated |
| Cisco Open Source Snort3 3.9 | 3.9.0.0 → 3.9.7.0 | No fix stated |
| Cisco Open Source Snort3 | 3.8.1.0 | No fix stated |
| Cisco Open Source Snort3 3.7 | 3.7.0.0 → 3.7.4.0 | No fix stated |
| Cisco Open Source Snort3 3.6 | 3.6.0.0 → 3.6.3.0 | No fix stated |
| Cisco Open Source Snort3 3.5 | 3.5.0.0 → 3.5.2.0 | No fix stated |
| Cisco Open Source Snort3 3.3 | 3.3.0.0 → 3.3.7.0 | No fix stated |
Show the 9 other branches Hide the 9 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Open Source Snort3 3.2 | 3.2.1.0 → 3.2.2.0 | No fix stated |
| Cisco Open Source Snort3 3.1 | 3.1.2.0 → 3.1.84.0 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software | 10.0.0 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.7 | 7.7.0 → 7.7.11 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.6 | 7.6.0 → 7.6.4 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | 7.4.0 → 7.4.7 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.3 | 7.3.0 → 7.3.1.2 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | 7.2.0 → 7.2.9 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | 7.0.0 → 7.0.9 | No fix stated |
References
- cisco-sa-snort3-misc-dos-6mB22qAK sec.cloudapps.cisco.com
Timeline
- Published
- Last modified
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