Critical Severity Vulnerabilities

28.6K CVEs classified as critical severity

CRITICAL
Total CVEs
28.6K
Vulnerabilities
Avg CVSS
9.8
Critical
Max CVSS
9.8
Highest
Min CVSS
9.8
Lowest

Browse by Severity

Critical Severity CVEs

Page 1026 of 1190
CVSS:9.8(Critical)

Pedestal Software Integrity Protection Driver (IPD) 1.3 and earlier allows privileged attackers, such as rootkits, to bypass file access restrictions to the Windows kernel by using the NtCreateSymboli...

CWE-592003
CVSS:9.8(Critical)

Buffer overflow in defang in libhttpd.c for thttpd 2.21 to 2.23b1 allows remote attackers to execute arbitrary code via requests that contain '<' or '>' characters, which trigger the overflow when the...

CVSS:9.8(Critical)

The Script.prototype.freeze/thaw functionality in Mozilla 1.4 and earlier allows attackers to execute native methods by modifying the string used as input to the script.thaw JavaScript function, which...

CVSS:9.8(Critical)

Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an SSL client certificate with a certain invalid ASN.1 e...

CVSS:9.8(Critical)

Off-by-one error in the fb_realpath() function, as derived from the realpath function in BSD, may allow attackers to execute arbitrary code, as demonstrated in wu-ftpd 2.5.0 through 2.6.2 via commands...

CVSS:9.8(Critical)

Multiple off-by-one vulnerabilities in Ethereal 0.9.11 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) AIM, (2) GIOP Gryphon, (3) OSPF, ...

CVSS:9.8(Critical)

Off-by-one error in the xlog function of mountd in the Linux NFS utils package (nfs-utils) before 1.0.4 allows remote attackers to cause a denial of service and possibly execute arbitrary code via cer...

CVSS:9.8(Critical)

The LDAP name service (nsd) in IRIX 6.5.19 and earlier does not properly verify if the USERPASSWORD attribute has been provided by an LDAP server, which could allow attackers to log in without a passw...

CVSS:9.8(Critical)

Snoopy before 2.0.0 has a security hole in exec cURL

CWE-202002
CVSS:9.8(Critical)

Novell eDirectory 8.6.2 and 8.7 use case insensitive passwords, which makes it easier for remote attackers to conduct brute force password guessing.

CVSS:9.8(Critical)

register.php in Ultimate PHP Board (UPB) 1.0 and 1.0b uses an administrative account Admin with a capital "A," but allows a remote attacker to impersonate the administrator by registering an account n...

CVSS:9.8(Critical)

Off-by-one buffer overflow in the sock_gets function in sockhelp.c for ATPhttpd 0.4b and earlier allows remote attackers to execute arbitrary code via a long HTTP GET request.

CVSS:9.8(Critical)

DB4Web server, when configured to use verbose debug messages, allows remote attackers to use DB4Web as a proxy and attempt TCP connections to other systems (port scan) via a request for a URL that spe...

CVSS:9.8(Critical)

Multiple buffer overflows in Cyrus SASL library 2.1.9 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) long inputs during user name canonical...

CVSS:9.8(Critical)

Pingtel xpressa SIP-based voice-over-IP phone 1.2.5 through 1.2.7.4 downloads phone applications from a web site but can not verify the integrity of the applications, which could allow remote attacker...

CVSS:9.8(Critical)

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication (ChallengeResponseAuthentication) when OpenSSH is using...

CVSS:9.8(Critical)

Integer overflow in xdr_array function in RPC servers for operating systems that use libc, glibc, or other code based on SunRPC including dietlibc, allows remote attackers to execute arbitrary code by...

CVSS:9.8(Critical)

Off-by-one error in the channel code of OpenSSH 2.0 through 3.0.2 allows local users or remote malicious servers to gain privileges.

CVSS:9.8(Critical)

The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than once (a "double free"), which may allow l...

CVSS:9.8(Critical)

Off-by-one buffer overflow in Basic Authentication in Acme Labs thttpd 1.95 through 2.20 allows remote attackers to cause a denial of service and possibly execute arbitrary code.

CVSS:9.8(Critical)

Xitami 2.4 through 2.5 b4 stores the Administrator password in plaintext in the default.aut file, whose default permissions are world-readable, which allows remote attackers to gain privileges.

CVSS:9.8(Critical)

Beck IPC GmbH IPC@CHIP telnet service does not delay or disconnect users from the service when bad passwords are entered, which makes it easier for remote attackers to conduct brute force password gue...

CVSS:9.8(Critical)

The telnet server for 3Com hardware such as PS40 SuperStack II does not delay or disconnect remote attackers who provide an incorrect username or password, which makes it easier to break into the serv...

CVSS:9.8(Critical)

TCP Wrappers (tcp_wrappers) in FreeBSD 4.1.1 through 4.3 with the PARANOID ACL option enabled does not properly check the result of a reverse DNS lookup, which could allow remote attackers to bypass i...