CVE-2011-2395
5.0 · MEDIUMOverview
CVE-2011-2395 is a medium-severity vulnerability affecting cisco ios. It was published on June 9, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).
This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
The Neighbor Discovery (ND) protocol implementation in Cisco IOS on unspecified switches allows remote attackers to bypass the Router Advertisement Guarding functionality via a fragmented IPv6 packet in which the Router Advertisement (RA) message is contained in the second fragment, as demonstrated by (1) a packet in which the first fragment contains a long Destination Options extension header or (2) a packet in which the first fragment contains an ICMPv6 Echo Request message.
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 |
|---|
Frequently Asked Questions
What is CVE-2011-2395?
CVE-2011-2395 is a medium-severity vulnerability affecting cisco ios. It was published on June 9, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).
How severe is CVE-2011-2395?
This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2011-2395?
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-2011-2395?
CyberStrike's AI-powered security agents can automatically detect CVE-2011-2395 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
Related MEDIUM CVEs from 2011
View all →Multiple integer overflows in the (1) pppol2tp_sendmsg function in net/l2tp/l2tp_ppp.c, and the (2)
elf/dl-load.c in ld.so in the GNU C Library (aka glibc or libc6) through 2.11.2, and 2.12.x through
The load_mixer_volumes function in sound/oss/soundcard.c in the OSS sound subsystem in the Linux ker
Unspecified vulnerability in the Cluster Verify Utility component in Oracle Database Server 10.2.0.4
A certain Fedora patch for parse.c in sudo before 1.7.4p5-1.fc14 on Fedora 14 does not properly inte
pam_namespace.c in the pam_namespace module in Linux-PAM (aka pam) before 1.1.3 uses the environment
Untrusted search path vulnerability in Lunascape before 6.4.0 allows local users to gain privileges
Microsoft Windows does not properly warn the user before enabling additional Human Interface Device
Apple Mac OS X does not properly warn the user before enabling additional Human Interface Device (HI
The default configuration of udev on Linux does not warn the user before enabling additional Human I
Balabit syslog-ng 2.0, 3.0, 3.1, 3.2 OSE and PE, when running on FreeBSD or HP-UX, does not properly
soffice in OpenOffice.org (OOo) 3.x before 3.3 places a zero-length directory name in the LD_LIBRARY