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CWE-20

12,833 CVEs • Abstraction: Class • Likelihood of Exploit: High

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

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CVEs (12,833)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Cisco
2Ios
Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
The Service Discovery Gateway (aka mDNS Gateway) in Cisco IOS 12.2, 12.4, 15.0, 15.1, 15.2, 15.3, and 15.4 and IOS XE 3.9.xS and 3.10.xS before 3.10.4S, 3.11.xS before 3.11.3S, 3.12.xS before 3.12.2S, and 3.13.xS before...Show more
The Service Discovery Gateway (aka mDNS Gateway) in Cisco IOS 12.2, 12.4, 15.0, 15.1, 15.2, 15.3, and 15.4 and IOS XE 3.9.xS and 3.10.xS before 3.10.4S, 3.11.xS before 3.11.3S, 3.12.xS before 3.12.2S, and 3.13.xS before 3.13.1S allows remote attackers to cause a denial of service (device reload) by sending malformed mDNS UDP packets over (1) IPv4 or (2) IPv6, aka Bug ID CSCup70579.Show less
1Cisco
1Ios
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
Cisco IOS 12.2, 12.4, 15.0, 15.2, and 15.3 allows remote attackers to cause a denial of service (device reload) via malformed Common Industrial Protocol (CIP) TCP packets, aka Bug ID CSCun63514.
1Cisco
1Ios
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
Cisco IOS 12.2, 12.4, 15.0, 15.2, and 15.3 allows remote attackers to cause a denial of service (device reload) via malformed Common Industrial Protocol (CIP) UDP packets, aka Bug ID CSCum98371.
1Cisco
1Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
The Layer 4 Redirect (L4R) feature in Cisco IOS XE 2.x and 3.x before 3.10.4S, 3.11 before 3.11.3S, 3.12 before 3.12.2S, 3.13 before 3.13.1S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to cause...Show more
The Layer 4 Redirect (L4R) feature in Cisco IOS XE 2.x and 3.x before 3.10.4S, 3.11 before 3.11.3S, 3.12 before 3.12.2S, 3.13 before 3.13.1S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to cause a denial of service (device reload) via malformed (1) IPv4 or (2) IPv6 packets, aka Bug ID CSCuq59131.Show less
1Cisco
1Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
AppNav in Cisco IOS XE 3.8 through 3.10 before 3.10.3S, 3.11 before 3.11.3S, 3.12 before 3.12.1S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to execute arbitrary code or cau...Show more
AppNav in Cisco IOS XE 3.8 through 3.10 before 3.10.3S, 3.11 before 3.11.3S, 3.12 before 3.12.1S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to execute arbitrary code or cause a denial of service (device reload) via a crafted TCP packet, aka Bug ID CSCuo53622.Show less
1Cisco
2Ios
Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
Cisco IOS 12.2, 12.4, 15.0, 15.1, 15.2, 15.3, and 15.4 and IOS XE 2.5.x, 2.6.x, 3.1.xS through 3.12.xS before 3.12.3S, 3.2.xE through 3.7.xE before 3.7.1E, 3.3.xSG, 3.4.xSG, and 3.13.xS before 3.13.2S allow remote attack...Show more
Cisco IOS 12.2, 12.4, 15.0, 15.1, 15.2, 15.3, and 15.4 and IOS XE 2.5.x, 2.6.x, 3.1.xS through 3.12.xS before 3.12.3S, 3.2.xE through 3.7.xE before 3.7.1E, 3.3.xSG, 3.4.xSG, and 3.13.xS before 3.13.2S allow remote attackers to cause a denial of service (device reload) by sending malformed IKEv2 packets over (1) IPv4 or (2) IPv6, aka Bug ID CSCum36951.Show less
1Cisco
1Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
Cisco IOS XE 2.x and 3.x before 3.9.0S, 3.10 before 3.10.0S, 3.11 before 3.11.0S, 3.12 before 3.12.0S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to cause a denial of servic...Show more
Cisco IOS XE 2.x and 3.x before 3.9.0S, 3.10 before 3.10.0S, 3.11 before 3.11.0S, 3.12 before 3.12.0S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to cause a denial of service (device reload) via crafted IPv6 packets, aka Bug ID CSCub68073.Show less
1Cisco
1Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
The high-speed logging (HSL) feature in Cisco IOS XE 2.x and 3.x before 3.10.4S, 3.11 before 3.11.3S, 3.12 before 3.12.1S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to caus...Show more
The high-speed logging (HSL) feature in Cisco IOS XE 2.x and 3.x before 3.10.4S, 3.11 before 3.11.3S, 3.12 before 3.12.1S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to cause a denial of service (device reload) via large IP packets that require NAT and HSL processing after fragmentation, aka Bug ID CSCuo25741.Show less
1Cisco
1Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
The Common Flow Table (CFT) feature in Cisco IOS XE 3.6 and 3.7 before 3.7.1S, 3.8 before 3.8.0S, 3.9 before 3.9.0S, 3.10 before 3.10.0S, 3.11 before 3.11.0S, 3.12 before 3.12.0S, 3.13 before 3.13.0S, 3.14 before 3.14.0S...Show more
The Common Flow Table (CFT) feature in Cisco IOS XE 3.6 and 3.7 before 3.7.1S, 3.8 before 3.8.0S, 3.9 before 3.9.0S, 3.10 before 3.10.0S, 3.11 before 3.11.0S, 3.12 before 3.12.0S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S, when MMON or NBAR is enabled, allows remote attackers to cause a denial of service (device reload) via malformed IPv6 packets with IPv4 UDP encapsulation, aka Bug ID CSCua79665.Show less
1Cisco
1Ios
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.1 HIGH· v2
Cisco IOS 12.2, 12.4, 15.0, 15.2, and 15.3, when a VRF interface is configured, allows remote attackers to cause a denial of service (interface queue wedge) via crafted ICMPv4 packets, aka Bug ID CSCsi02145.
1Cisco
2Ios
Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
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 cause a denial of service (dev...Show more
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 cause a denial of service (device reload) via spoofed AN messages, aka Bug ID CSCup62315.Show less
1Cisco
2Ios
Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
7.8 HIGH· v2
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 cause a denial of service (dis...Show more
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 cause a denial of service (disrupted domain access) via spoofed AN messages that reset a finite state machine, aka Bug ID CSCup62293.Show less
1Cisco
2Ios
Ios Xe
May 6, 2026
Mar 26, 2015
N/A· v4
N/A· v3
9.0 HIGH· v2
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 Reg...Show more
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.Show less
3Apache
DebianFedoraproject
3Debian Linux
FedoraXerces C++
May 6, 2026
Mar 24, 2015
N/A· v4
N/A· v3
5.0 MEDIUM· v2
internal/XMLReader.cpp in Apache Xerces-C before 3.1.2 allows remote attackers to cause a denial of service (segmentation fault and crash) via crafted XML data.
1Ibm
1Powervc
May 6, 2026
Mar 24, 2015
N/A· v4
N/A· v3
4.3 MEDIUM· v2
IBM PowerVC Standard 1.2.0.x before 1.2.0.4 and 1.2.1.x before 1.2.2 validates Hardware Management Console (HMC) certificates only during the pre-login stage, which allows man-in-the-middle attackers to spoof devices via...Show more
IBM PowerVC Standard 1.2.0.x before 1.2.0.4 and 1.2.1.x before 1.2.2 validates Hardware Management Console (HMC) certificates only during the pre-login stage, which allows man-in-the-middle attackers to spoof devices via a crafted certificate.Show less
1Cisco
1Ios
May 6, 2026
Mar 21, 2015
N/A· v4
N/A· v3
6.4 MEDIUM· v2
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 15.4S and 15.4(3)S allows remote attackers to modify configuration settings or cause a denial of service (partial service outage) by sending craft...Show more
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 15.4S and 15.4(3)S allows remote attackers to modify configuration settings or cause a denial of service (partial service outage) by sending crafted Autonomic Networking (AN) messages on an intranet network, aka Bug ID CSCup62167.Show less
1Openssl
1Openssl
May 6, 2026
Mar 19, 2015
N/A· v4
N/A· v3
2.6 LOW· v2
The ssl3_get_client_key_exchange function in s3_srvr.c in OpenSSL 1.0.2 before 1.0.2a, when client authentication and an ephemeral Diffie-Hellman ciphersuite are enabled, allows remote attackers to cause a denial of serv...Show more
The ssl3_get_client_key_exchange function in s3_srvr.c in OpenSSL 1.0.2 before 1.0.2a, when client authentication and an ephemeral Diffie-Hellman ciphersuite are enabled, allows remote attackers to cause a denial of service (daemon crash) via a ClientKeyExchange message with a length of zero.Show less
1Openssl
1Openssl
May 6, 2026
Mar 19, 2015
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (s2_lib.c assertion failure and daemon exit) via...Show more
The SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (s2_lib.c assertion failure and daemon exit) via a crafted CLIENT-MASTER-KEY message.Show less
1Cisco
1Anyconnect Secure Mobility Client
May 6, 2026
Mar 18, 2015
N/A· v4
N/A· v3
4.3 MEDIUM· v2
The IPC channel in Cisco AnyConnect Secure Mobility Client 4.0(.00051) and earlier allows local users to write to arbitrary userspace memory locations, and consequently gain privileges, via crafted messages, aka Bug ID C...Show more
The IPC channel in Cisco AnyConnect Secure Mobility Client 4.0(.00051) and earlier allows local users to write to arbitrary userspace memory locations, and consequently gain privileges, via crafted messages, aka Bug ID CSCus79195.Show less
1Scadaengine
1Bacnet Opc Server
May 6, 2026
Mar 14, 2015
N/A· v4
N/A· v3
9.0 HIGH· v2
Format string vulnerability in BACnOPCServer.exe in the SOAP web interface in SCADA Engine BACnet OPC Server before 2.1.371.24 allows remote attackers to execute arbitrary code via format string specifiers in a request.