CVE-2016-6381
UnknownEPSS 3.21%
Last modified
CVE-2016-6381 is a vulnerability of currently unknown severity. Cisco IOS 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.18 and 16.1 allow remote attackers to cause a denial of service (memory consumption or device reload) via fragmented IKEv1 packets, aka Bug ID CSCuy47382.. EPSS estimates a 3.21% chance of exploitation in the next 30 days.
Description
Cisco IOS 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.18 and 16.1 allow remote attackers to cause a denial of service (memory consumption or device reload) via fragmented IKEv1 packets, aka Bug ID CSCuy47382.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios | 12.4\(15\)t7 |
| Cisco | Ios | 12.4\(15\)t8 |
| Cisco | Ios | 12.4\(15\)t9 |
| Cisco | Ios | 12.4\(15\)t10 |
| Cisco | Ios | 12.4\(15\)t11 |
| Cisco | Ios | 12.4\(15\)t12 |
| Cisco | Ios | 12.4\(15\)t13 |
| Cisco | Ios | 12.4\(15\)t14 |
| Cisco | Ios | 12.4\(15\)t15 |
| Cisco | Ios | 12.4\(15\)t16 |
| Cisco | Ios | 12.4\(15\)t17 |
| Cisco | Ios | 12.4\(15\)xl4 |
| Cisco | Ios | 12.4\(15\)xl5 |
| Cisco | Ios | 12.4\(20\)mr |
| Cisco | Ios | 12.4\(20\)mr2 |
| Cisco | Ios | 12.4\(20\)mrb |
| Cisco | Ios | 12.4\(20\)mrb1 |
| Cisco | Ios | 12.4\(20\)t1 |
| Cisco | Ios | 12.4\(20\)t2 |
| Cisco | Ios | 12.4\(20\)t3 |
| Cisco | Ios | 12.4\(20\)t4 |
| Cisco | Ios | 12.4\(20\)t5 |
| Cisco | Ios | 12.4\(20\)t6 |
| Cisco | Ios | 12.4\(22\)gc1 |
| Cisco | Ios | 12.4\(22\)md |
| Cisco | Ios | 12.4\(22\)md1 |
| Cisco | Ios | 12.4\(22\)md2 |
| Cisco | Ios | 12.4\(22\)mda |
| Cisco | Ios | 12.4\(22\)mda1 |
| Cisco | Ios | 12.4\(22\)mda2 |
| Cisco | Ios | 12.4\(22\)mda3 |
| Cisco | Ios | 12.4\(22\)mda4 |
| Cisco | Ios | 12.4\(22\)mda5 |
| Cisco | Ios | 12.4\(22\)mda6 |
| Cisco | Ios | 12.4\(22\)t |
| Cisco | Ios | 12.4\(22\)t1 |
| Cisco | Ios | 12.4\(22\)t2 |
| Cisco | Ios | 12.4\(22\)t3 |
| Cisco | Ios | 12.4\(22\)t4 |
| Cisco | Ios | 12.4\(22\)t5 |
| Cisco | Ios | 12.4\(22\)xr1 |
| Cisco | Ios | 12.4\(22\)xr2 |
| Cisco | Ios | 12.4\(22\)xr3 |
| Cisco | Ios | 12.4\(22\)xr4 |
| Cisco | Ios | 12.4\(22\)xr5 |
| Cisco | Ios | 12.4\(22\)xr6 |
| Cisco | Ios | 12.4\(22\)xr7 |
| Cisco | Ios | 12.4\(22\)xr8 |
| Cisco | Ios | 12.4\(22\)xr9 |
| Cisco | Ios | 12.4\(22\)xr10 |
Showing 50 of 708 affected configurations. See NVD for the full list.
References
- http://www.securityfocus.com/bid/93195Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/93195Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-6381?
Cisco IOS 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.18 and 16.1 allow remote attackers to cause a denial of service (memory consumption or device reload) via fragmented IKEv1 packets, aka Bug ID CSCuy47382.
How severe is CVE-2016-6381?
Severity scoring for CVE-2016-6381 is pending analysis. The EPSS model estimates a 3.21% probability of exploitation in the next 30 days.
How do I fix CVE-2016-6381?
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-2016-6381?
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