Vulnerabilities > Cisco > IOS > Critical

DATE CVE VULNERABILITY TITLE RISK
2017-03-17 CVE-2017-3881 Improper Input Validation vulnerability in Cisco IOS and IOS XE
A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges.
network
low complexity
cisco CWE-20
critical
10.0
2015-09-28 CVE-2015-6280 Improper Authentication vulnerability in Cisco IOS and IOS XE
The SSHv2 functionality in Cisco IOS 15.2, 15.3, 15.4, and 15.5 and IOS XE 3.6E before 3.6.3E, 3.7E before 3.7.1E, 3.10S before 3.10.6S, 3.11S before 3.11.4S, 3.12S before 3.12.3S, 3.13S before 3.13.3S, and 3.14S before 3.14.1S does not properly implement RSA authentication, which allows remote attackers to obtain login access by leveraging knowledge of a username and the associated public key, aka Bug ID CSCus73013.
network
cisco CWE-287
critical
9.3
2015-03-26 CVE-2015-0635 Improper Input Validation vulnerability in Cisco IOS and IOS XE
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.10.xS through 3.13.xS before 3.13.1S allows remote attackers to spoof Autonomic Networking Registration Authority (ANRA) responses, and consequently bypass intended device and node access restrictions or cause a denial of service (disrupted domain access), via crafted AN messages, aka Bug ID CSCup62191.
network
low complexity
cisco CWE-20
critical
9.0
2012-05-02 CVE-2011-4012 Remote Security vulnerability in IOS 12.0/15.0/15.1
Cisco IOS 12.0, 15.0, and 15.1, when a Policy Feature Card 3C (PFC3C) is used, does not create a fragment entry during processing of an ICMPv6 ACL, which has unspecified impact and remote attack vectors, aka Bug ID CSCtj90091.
network
cisco
critical
9.3
2011-10-03 CVE-2011-3271 Unspecified vulnerability in Cisco IOS 12.2/15.1
Unspecified vulnerability in the Smart Install functionality in Cisco IOS 12.2 and 15.1 allows remote attackers to execute arbitrary code or cause a denial of service (device crash) via crafted TCP packets to port 4786, aka Bug ID CSCto10165.
network
low complexity
cisco
critical
10.0
2011-04-14 CVE-2011-0935 Cryptographic Issues vulnerability in Cisco IOS 15.0/15.1
The PKI functionality in Cisco IOS 15.0 and 15.1 does not prevent permanent caching of certain public keys, which allows remote attackers to bypass authentication and have unspecified other impact by leveraging an IKE peer relationship in which a key was previously valid but later revoked, aka Bug ID CSCth82164, a different vulnerability than CVE-2010-4685.
network
low complexity
cisco CWE-310
critical
10.0
2010-07-08 CVE-2010-1574 Permissions, Privileges, and Access Controls vulnerability in Cisco Industrial Ethernet 3000 and IOS
IOS 12.2(52)SE and 12.2(52)SE1 on Cisco Industrial Ethernet (IE) 3000 series switches has (1) a community name of public for RO access and (2) a community name of private for RW access, which makes it easier for remote attackers to modify the configuration or obtain potentially sensitive information via SNMP requests, aka Bug ID CSCtf25589.
network
low complexity
cisco CWE-264
critical
10.0
2010-03-25 CVE-2010-0580 Unspecified vulnerability in Cisco IOS
Unspecified vulnerability in the SIP implementation in Cisco IOS 12.3 and 12.4 allows remote attackers to execute arbitrary code via a malformed SIP message, aka Bug ID CSCsz48680, the "SIP Message Processing Arbitrary Code Execution Vulnerability."
network
low complexity
cisco
critical
10.0
2010-03-25 CVE-2010-0581 Unspecified vulnerability in Cisco IOS
Unspecified vulnerability in the SIP implementation in Cisco IOS 12.3 and 12.4 allows remote attackers to execute arbitrary code via a malformed SIP message, aka Bug ID CSCsz89904, the "SIP Packet Parsing Arbitrary Code Execution Vulnerability."
network
low complexity
cisco
critical
10.0
2008-09-26 CVE-2008-3807 Unspecified vulnerability in Cisco IOS
Cisco IOS 12.2 and 12.3 on Cisco uBR10012 series devices, when linecard redundancy is configured, enables a read/write SNMP service with "private" as the community, which allows remote attackers to obtain administrative access by guessing this community and sending SNMP requests.
network
cisco
critical
9.3