CVE-2016-1453
CRITICALCVSS 9.8/10EPSS 8.07%
Last modified
CVE-2016-1453 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Buffer overflow in the Overlay Transport Virtualization (OTV) GRE feature in Cisco NX-OS 5.0 through 7.3 on Nexus 7000 and 7700 devices allows remote attackers to execute arbitrary code via long parameters in a packet header, aka Bug ID CSCuy95701.. EPSS estimates a 8.07% chance of exploitation in the next 30 days.
Description
Buffer overflow in the Overlay Transport Virtualization (OTV) GRE feature in Cisco NX-OS 5.0 through 7.3 on Nexus 7000 and 7700 devices allows remote attackers to execute arbitrary code via long parameters in a packet header, aka Bug ID CSCuy95701.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Nx-Os | 4.1.\(2\) |
| Cisco | Nx-Os | 4.1.\(3\) |
| Cisco | Nx-Os | 4.1.\(4\) |
| Cisco | Nx-Os | 4.1.\(5\) |
| Cisco | Nx-Os | 4.2\(3\) |
| Cisco | Nx-Os | 4.2\(4\) |
| Cisco | Nx-Os | 4.2\(6\) |
| Cisco | Nx-Os | 4.2\(8\) |
| Cisco | Nx-Os | 4.2.\(2a\) |
| Cisco | Nx-Os | 5.0\(2a\) |
| Cisco | Nx-Os | 5.0\(3\) |
| Cisco | Nx-Os | 5.0\(5\) |
| Cisco | Nx-Os | 5.1\(1\) |
| Cisco | Nx-Os | 5.1\(1a\) |
| Cisco | Nx-Os | 5.1\(3\) |
| Cisco | Nx-Os | 5.1\(4\) |
| Cisco | Nx-Os | 5.1\(5\) |
| Cisco | Nx-Os | 5.1\(6\) |
| Cisco | Nx-Os | 5.2\(1\) |
| Cisco | Nx-Os | 5.2\(3a\) |
| Cisco | Nx-Os | 5.2\(4\) |
| Cisco | Nx-Os | 5.2\(5\) |
| Cisco | Nx-Os | 5.2\(7\) |
| Cisco | Nx-Os | 5.2\(9\) |
| Cisco | Nx-Os | 6.0\(1\) |
| Cisco | Nx-Os | 6.0\(2\) |
| Cisco | Nx-Os | 6.0\(3\) |
| Cisco | Nx-Os | 6.0\(4\) |
| Cisco | Nx-Os | 6.1\(1\) |
| Cisco | Nx-Os | 6.1\(2\) |
| Cisco | Nx-Os | 6.1\(3\) |
| Cisco | Nx-Os | 6.1\(4\) |
| Cisco | Nx-Os | 6.1\(4a\) |
| Cisco | Nx-Os | 6.1\(5\) |
| Cisco | Nx-Os | 6.2\(2\) |
| Cisco | Nx-Os | 6.2\(2a\) |
| Cisco | Nx-Os | 6.2\(6\) |
| Cisco | Nx-Os | 6.2\(6b\) |
| Cisco | Nx-Os | 6.2\(8\) |
| Cisco | Nx-Os | 6.2\(8a\) |
| Cisco | Nx-Os | 6.2\(8b\) |
| Cisco | Nx-Os | 6.2\(10\) |
| Cisco | Nx-Os | 6.2\(12\) |
| Cisco | Nx-Os | 6.2\(14\)s1 |
| Cisco | Nx-Os | 7.2\(0\)n1\(0.1\) |
| Cisco | Nx-Os | base |
References
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-otvMitigation, Vendor Advisory
- http://www.securityfocus.com/bid/93409Not Applicable, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1036946Not Applicable, Third Party Advisory, VDB Entry
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-otvMitigation, Vendor Advisory
- http://www.securityfocus.com/bid/93409Not Applicable, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1036946Not Applicable, Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-1453?
Buffer overflow in the Overlay Transport Virtualization (OTV) GRE feature in Cisco NX-OS 5.0 through 7.3 on Nexus 7000 and 7700 devices allows remote attackers to execute arbitrary code via long parameters in a packet header, aka Bug ID CSCuy95701.
How severe is CVE-2016-1453?
CVE-2016-1453 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 8.07% probability of exploitation in the next 30 days.
How do I fix CVE-2016-1453?
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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