CVE-2011-1640
7.5 · HIGHThe ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a large number of LLDP Management Address (MA) TLVs, which allows remote attackers to cause a denial of s…
Overview
CVE-2011-1640 is a high-severity vulnerability affecting cisco ios. It was published on October 22, 2011 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical description
The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a large number of LLDP Management Address (MA) TLVs, which allows remote attackers to cause a denial of service (device crash) via crafted LLDPDUs, aka Bug ID CSCtj22354.
Remediation
Check the references section for vendor advisories and patches from cisco. Update ios to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cisco | ios | >= 12.2, < 12.2\(33\)sxj1 | Affected |
How CyberStrike helps
Reason, not just scan
It reasons through your app's logic the way a human pentester would, so it finds flaws signature scanners miss.
Learn moreVerified findings
Every finding is proven exploitable before you see it, which cuts the false positives that bury real risk.
Learn moreAI-driven DAST and SAST
Probe running apps and read source from one engine, so issues are caught before and after they ship.
Learn moreOpen source
Read exactly how it tests and what it reports. CyberStrike is open source and in early access.
View the repo
Frequently asked questions
What is CVE-2011-1640?
CVE-2011-1640 is a high-severity vulnerability affecting cisco ios. It was published on October 22, 2011 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2011-1640?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2011-1640?
Check the references section for vendor advisories and patches from cisco. Update ios to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2011-1640?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1640 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
Related HIGH CVEs from 2011
View all- 10.0CVE-2011-0406
Heap-based buffer overflow in HistorySvr.exe in WellinTech KingView 6.53 allows remote attackers to
View details - 10.0CVE-2010-3912
The supportconfig script in supportutils in SUSE Linux Enterprise 11 SP1 and 10 SP3 does not "disgui
View details - 10.0CVE-2011-0444
Buffer overflow in the MAC-LTE dissector (epan/dissectors/packet-mac-lte.c) in Wireshark 1.2.0 throu
View details - 10.0CVE-2011-0261
Unspecified vulnerability in jovgraph.exe in jovgraph in HP OpenView Network Node Manager (OV NNM) 7
View details - 10.0CVE-2011-0262
Buffer overflow in the stringToSeconds function in ovutil.dll in ovwebsnmpsrv.exe in HP OpenView Net
View details - 10.0CVE-2011-0263
Multiple stack-based buffer overflows in ovas.exe in the OVAS service in HP OpenView Network Node Ma
View details - 10.0CVE-2011-0264
Stack-based buffer overflow in ovutil.dll in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53
View details - 10.0CVE-2011-0265
Buffer overflow in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allow
View details - 10.0CVE-2011-0266
Buffer overflow in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allow
View details - 10.0CVE-2011-0267
Multiple buffer overflows in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and
View details - 10.0CVE-2011-0268
Buffer overflow in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allow
View details - 10.0CVE-2011-0269
Buffer overflow in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allow
View details