CVE-2011-4006
UnknownEPSS 1.33%
Last modified
CVE-2011-4006 is a vulnerability of currently unknown severity. The ESMTP inspection feature on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2 through 8.5 allows remote attackers to cause a denial of service (CPU consumption) via an unspecified closing sequence, aka Bug ID CSCtt32565.. EPSS estimates a 1.33% chance of exploitation in the next 30 days.
Description
The ESMTP inspection feature on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2 through 8.5 allows remote attackers to cause a denial of service (CPU consumption) via an unspecified closing sequence, aka Bug ID CSCtt32565.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Adaptive Security Appliance Software | 8.2\(1\) |
| Cisco | Adaptive Security Appliance Software | 8.2\(2\) |
| Cisco | Adaptive Security Appliance Software | 8.2\(3\) |
| Cisco | Adaptive Security Appliance Software | 8.2\(3.9\) |
| Cisco | Adaptive Security Appliance Software | 8.2\(4\) |
| Cisco | Adaptive Security Appliance Software | 8.2\(4.1\) |
| Cisco | Adaptive Security Appliance Software | 8.2\(4.4\) |
| Cisco | Adaptive Security Appliance Software | 8.2\(5\) |
| Cisco | Adaptive Security Appliance Software | 8.2.1 |
| Cisco | Adaptive Security Appliance Software | 8.2.2 |
| Cisco | Adaptive Security Appliance Software | 8.2.3 |
| Cisco | Adaptive Security Appliance Software | 8.3\(1\) |
| Cisco | Adaptive Security Appliance Software | 8.3\(2\) |
| Cisco | Adaptive Security Appliance Software | 8.3.1 |
| Cisco | Adaptive Security Appliance Software | 8.3.2 |
| Cisco | Adaptive Security Appliance Software | 8.4 |
| Cisco | Adaptive Security Appliance Software | 8.4\(1\) |
| Cisco | Adaptive Security Appliance Software | 8.4\(1.11\) |
| Cisco | Adaptive Security Appliance Software | 8.4\(2\) |
| Cisco | Adaptive Security Appliance Software | 8.4\(2.11\) |
| Cisco | Adaptive Security Appliance Software | 8.5 |
| Cisco | Adaptive Security Appliance Software | 8.5\(1\) |
| Cisco | Adaptive Security Appliance Software | 8.5\(1.4\) |
| Cisco | 5500 Series Adaptive Security Appliance | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2011-4006?
The ESMTP inspection feature on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2 through 8.5 allows remote attackers to cause a denial of service (CPU consumption) via an unspecified closing sequence, aka Bug ID CSCtt32565.
How severe is CVE-2011-4006?
Severity scoring for CVE-2011-4006 is pending analysis. The EPSS model estimates a 1.33% probability of exploitation in the next 30 days.
How do I fix CVE-2011-4006?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2011-4006?
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