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CWE-20

12,815 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 (12,815)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Cisco
1Unified Computing System
Apr 29, 2026
Oct 2, 2013
N/A· v4
N/A· v3
6.8 MEDIUM· v2
The clear sshkey command in the fabric-interconnect component in Cisco Unified Computing System (UCS) allows local users to gain privileges by embedding commands in an unspecified parameter, aka Bug ID CSCtq86559.
1Cisco
1Unified Computing System
Apr 29, 2026
Oct 2, 2013
N/A· v4
N/A· v3
6.8 MEDIUM· v2
ethanalyzer in the fabric-interconnect component in Cisco Unified Computing System (UCS) allows local users to gain privileges by embedding commands in an unspecified parameter, aka Bug ID CSCtq02686.
1Cisco
1Unified Computing System
Apr 29, 2026
Oct 2, 2013
N/A· v4
N/A· v3
6.8 MEDIUM· v2
The activate firmware command in the fabric-interconnect component in Cisco Unified Computing System (UCS) allows local users to gain privileges by embedding commands in an unspecified parameter, aka Bug ID CSCtq02600.
1Cisco
1Unified Computing System
Apr 29, 2026
Oct 2, 2013
N/A· v4
N/A· v3
5.5 MEDIUM· v2
The local file editor in the fabric-interconnect component in Cisco Unified Computing System (UCS) allows local users to gain privileges, and read or modify arbitrary files, via unspecified key bindings, aka Bug ID CSCtn...Show more
The local file editor in the fabric-interconnect component in Cisco Unified Computing System (UCS) allows local users to gain privileges, and read or modify arbitrary files, via unspecified key bindings, aka Bug ID CSCtn04521.Show less
1Ibm
1Db2
Apr 29, 2026
Oct 2, 2013
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The Fast Communications Manager (FCM) in IBM DB2 Enterprise Server Edition and Advanced Enterprise Server Edition 10.1 before FP3 and 10.5, when a multi-node configuration is used, allows remote attackers to cause a deni...Show more
The Fast Communications Manager (FCM) in IBM DB2 Enterprise Server Edition and Advanced Enterprise Server Edition 10.1 before FP3 and 10.5, when a multi-node configuration is used, allows remote attackers to cause a denial of service via vectors involving arbitrary data.Show less
2Mongodb
Redhat
2Enterprise Mrg
Mongodb
Apr 29, 2026
Oct 1, 2013
N/A· v4
N/A· v3
6.0 MEDIUM· v2
MongoDB before 2.0.9 and 2.2.x before 2.2.4 does not properly validate requests to the nativeHelper function in SpiderMonkey, which allows remote authenticated users to cause a denial of service (invalid memory access an...Show more
MongoDB before 2.0.9 and 2.2.x before 2.2.4 does not properly validate requests to the nativeHelper function in SpiderMonkey, which allows remote authenticated users to cause a denial of service (invalid memory access and server crash) or execute arbitrary code via a crafted memory address in the first argument.Show less
1Barton
1Ngircd
Apr 29, 2026
Oct 1, 2013
N/A· v4
N/A· v3
4.3 MEDIUM· v2
The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write fu...Show more
The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a "notice auth" message not being sent to a new client.Show less
2Canonical
David King
2Ubuntu Linux
Vino
Apr 29, 2026
Oct 1, 2013
N/A· v4
N/A· v3
7.1 HIGH· v2
The vino_server_client_data_pending function in vino-server.c in GNOME Vino 2.26.1, 2.32.1, 3.7.3, and earlier, and 3.8 when encryption is disabled, does not properly clear client data when an error causes the connection...Show more
The vino_server_client_data_pending function in vino-server.c in GNOME Vino 2.26.1, 2.32.1, 3.7.3, and earlier, and 3.8 when encryption is disabled, does not properly clear client data when an error causes the connection to close during authentication, which allows remote attackers to cause a denial of service (infinite loop, CPU and disk consumption) via multiple crafted requests during authentication.Show less
1Cisco
1Unified Computing System
Apr 29, 2026
Oct 1, 2013
N/A· v4
N/A· v3
6.2 MEDIUM· v2
The local file editor in the Baseboard Management Controller (BMC) in Cisco Unified Computing System (UCS) allows local users to gain privileges and modify arbitrary fabric-interconnect files, in the context of a vi proc...Show more
The local file editor in the Baseboard Management Controller (BMC) in Cisco Unified Computing System (UCS) allows local users to gain privileges and modify arbitrary fabric-interconnect files, in the context of a vi process, via unspecified commands, aka Bug ID CSCtn06574.Show less
1Polarssl
1Polarssl
Apr 29, 2026
Sep 30, 2013
N/A· v4
N/A· v3
4.3 MEDIUM· v2
The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of ser...Show more
The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.Show less
1Squid Cache
1Squid
Apr 29, 2026
Sep 30, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The strHdrAcptLangGetItem function in errorpage.cc in Squid 3.2.x before 3.2.9 and 3.3.x before 3.3.3 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a "," character in an Acc...Show more
The strHdrAcptLangGetItem function in errorpage.cc in Squid 3.2.x before 3.2.9 and 3.3.x before 3.3.3 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a "," character in an Accept-Language header.Show less
2Canonical
Jean Paul Calderone
2Pyopenssl
Ubuntu Linux
Apr 29, 2026
Sep 30, 2013
N/A· v4
N/A· v3
4.3 MEDIUM· v2
The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arb...Show more
The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.Show less
1Redhat
1Libvirt
Apr 29, 2026
Sep 30, 2013
N/A· v4
N/A· v3
4.0 MEDIUM· v2
The qemu driver (qemu/qemu_driver.c) in libvirt before 1.1.1 allows remote authenticated users to cause a denial of service (daemon crash) via unspecified vectors involving "multiple events registration."
1Cisco
1Ios Xr
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The PPTP-ALG component in CRS Carrier Grade Services Engine (CGSE) and ASR 9000 Integrated Service Module (ISM) in Cisco IOS XR allows remote attackers to cause a denial of service (module reset) via crafted packet strea...Show more
The PPTP-ALG component in CRS Carrier Grade Services Engine (CGSE) and ASR 9000 Integrated Service Module (ISM) in Cisco IOS XR allows remote attackers to cause a denial of service (module reset) via crafted packet streams, aka Bug ID CSCue91963.Show less
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.1 HIGH· v2
The PPTP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via crafted TCP port-1723 packets, aka Bug ID CSCtq14817.
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCuf28733.
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCtn53730.
1Cisco
2Ios
Ios Xe
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
Cisco IOS 15.0 through 15.3 and IOS XE 3.2 through 3.8, when a VRF interface exists, allows remote attackers to cause a denial of service (interface queue wedge) via crafted UDP RSVP packets, aka Bug ID CSCuf17023.
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The T1/E1 driver-queue functionality in Cisco IOS 12.2 and 15.0 through 15.3, when an HDLC32 driver is used, allows remote attackers to cause a denial of service (interface queue wedge) via bursty network traffic, aka Bu...Show more
The T1/E1 driver-queue functionality in Cisco IOS 12.2 and 15.0 through 15.3, when an HDLC32 driver is used, allows remote attackers to cause a denial of service (interface queue wedge) via bursty network traffic, aka Bug ID CSCub67465.Show less
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv...Show more
The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.Show less