Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 11 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,764exploited flaws on CISA’s list
35added in the last 30 days
456new WordPress flaws this week
390,714entries in the database

424 results · page 9 of 9

  • Aug 7, 2001Avaya Argent Office allows remote attackers to cause a denial of service by sending UDP packets to port 53 with no payload.CVE-2001-1259 · Other software · Avaya · reported by MITREMedium 5

    Avaya Argent Office allows remote attackers to cause a denial of service by sending UDP packets to port 53 with no payload.

    Product
    Argent Office
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jul 24, 2001Cisco routers and switches running IOS 12.0 through 12.2.1 allows a remote attacker to cause a denial of service via a flood of UDP packets.CVE-2001-1097 · Network & remote access · Cisco · reported by MITREMedium 5

    Cisco routers and switches running IOS 12.0 through 12.2.1 allows a remote attacker to cause a denial of service via a flood of UDP packets.

    Product
    IOS
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jul 17, 2001Quake 1 and NetQuake servers allow remote attackers to cause a denial of service (resource exhaustion or forced disconnection) via a flood of spoofed UDP connecCVE-1999-1569 · Other software · ID Software · reported by MITREMedium 5

    Quake 1 and NetQuake servers allow remote attackers to cause a denial of service (resource exhaustion or forced disconnection) via a flood of spoofed UDP connection packets, which exceeds the server's player limit.

    Product
    Quake
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 3, 2001Windows 98 and Windows 2000 Java clients allow remote attackers to cause a denial of service via a Java applet that opens a large number of UDP sockets, which pCVE-2001-0324 · Computers, phones & browsers · Microsoft · reported by MITRELow 2.6

    Windows 98 and Windows 2000 Java clients allow remote attackers to cause a denial of service via a Java applet that opens a large number of UDP sockets, which prevents the host from establishing any additional UDP connections, and possibly causes a crash.

    Product
    Windows 2000
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 17, 2001Unknown vulnerabilities in the UDP port allocation for Linux kernel before 2.2.19 could allow local users to cause a denial of service (deadlock).CVE-2001-1400 · Computers, phones & browsers · Linux · reported by MITRELow 2.1

    Unknown vulnerabilities in the UDP port allocation for Linux kernel before 2.2.19 could allow local users to cause a denial of service (deadlock).

    Product
    Linux Kernel
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jan 9, 2001NAI Sniffer Agent allows remote attackers to gain privileges on the agent by sniffing the initial UDP authentication packets and spoofing commands.CVE-2000-1159 · Other software · Network Associates · reported by MITREHigh 7.5

    NAI Sniffer Agent allows remote attackers to gain privileges on the agent by sniffing the initial UDP authentication packets and spoofing commands.

    Product
    Sniffer Agent
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Nov 14, 2000annclist.exe in webTV for Windows allows remote attackers to cause a denial of service by via a large, malformed UDP packet to ports 22701 through 22705.CVE-2000-0830 · Computers, phones & browsers · Microsoft · reported by MITREMedium 5

    annclist.exe in webTV for Windows allows remote attackers to cause a denial of service by via a large, malformed UDP packet to ports 22701 through 22705.

    Product
    Webtv
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Nov 1, 2000Quake 1 (quake1) and ProQuake 1.01 and earlier allow remote attackers to cause a denial of service via a malformed (empty) UDP packet.CVE-2000-1080 · Other software · ID Software · reported by MITREMedium 5

    Quake 1 (quake1) and ProQuake 1.01 and earlier allow remote attackers to cause a denial of service via a malformed (empty) UDP packet.

    Product
    Quake
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 20, 2000eEye IRIS 1.01 beta allows remote attackers to cause a denial of service via a large number of UDP connections.CVE-2000-0734 · Other software · Eeye Digital Security · reported by MITREMedium 5

    eEye IRIS 1.01 beta allows remote attackers to cause a denial of service via a large number of UDP connections.

    Product
    Iris
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 30, 2000Windows 2000 Server allows remote attackers to cause a denial of service by sending a continuous stream of binary zeros to various TCP and UDP ports, which signCVE-2000-0580 · Computers, phones & browsers · Microsoft · reported by MITREMedium 5

    Windows 2000 Server allows remote attackers to cause a denial of service by sending a continuous stream of binary zeros to various TCP and UDP ports, which significantly increases the CPU utilization.

    Product
    Windows 2000
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 30, 2000Sybergen Sygate allows remote attackers to cause a denial of service by sending a malformed DNS UDP packet to its internal interface.CVE-2000-0569 · Other software · Sybergen · reported by MITREMedium 5

    Sybergen Sygate allows remote attackers to cause a denial of service by sending a malformed DNS UDP packet to its internal interface.

    Product
    Sygate
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 8, 2000RSA ACE/Server allows remote attackers to cause a denial of service by flooding the server's authentication request port with UDP packets, which causes the servCVE-2000-0522 · Other software · RSA · reported by MITREMedium 5

    RSA ACE/Server allows remote attackers to cause a denial of service by flooding the server's authentication request port with UDP packets, which causes the server to crash.

    Product
    ACE Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 24, 2000ZoneAlarm 2.1.10 and earlier does not filter UDP packets with a source port of 67, which allows remote attackers to bypass the firewall rules.CVE-2000-0339 · Other software · Zonelabs · reported by MITREHigh 7.5

    ZoneAlarm 2.1.10 and earlier does not filter UDP packets with a source port of 67, which allows remote attackers to bypass the firewall rules.

    Product
    Zonealarm
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 27, 2000IP masquerading in Linux 2.2.x allows remote attackers to route UDP packets through the internal interface by modifying the external source IP address and port CVE-2000-0289 · Other software · Debian · reported by MITREMedium 5

    IP masquerading in Linux 2.2.x allows remote attackers to route UDP packets through the internal interface by modifying the external source IP address and port number to match those of an established connection.

    Product
    Debian Linux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 25, 2000The Nautica Marlin bridge allows remote attackers to cause a denial of service via a zero length UDP packet to the SNMP port.CVE-2000-0221 · Other software · Nortel · reported by MITREMedium 5

    The Nautica Marlin bridge allows remote attackers to cause a denial of service via a zero length UDP packet to the SNMP port.

    Product
    Nautica Marlin
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 31, 1999DNS allows remote attackers to use DNS name servers as traffic amplifiers via a UDP DNS query with a spoofed source address, which produces more traffic to the CVE-1999-1379 · Other software · Dnstools Software · reported by MITREMedium 5

    DNS allows remote attackers to use DNS name servers as traffic amplifiers via a UDP DNS query with a spoofed source address, which produces more traffic to the victim than was sent by the attacker.

    Product
    Dnstools
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 22, 1999Quake 1 server responds to an initial UDP game connection request with a large amount of traffic, which allows remote attackers to use the server as an amplifieCVE-1999-1066 · Other software · SGI · reported by MITREMedium 5

    Quake 1 server responds to an initial UDP game connection request with a large amount of traffic, which allows remote attackers to use the server as an amplifier in a "Smurf" style attack on another host, by spoofing the connection request.

    Product
    Quake 1 Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 17, 1999ICQ ActiveList Server allows remote attackers to cause a denial of service (crash) via malformed packets to the server's UDP port.CVE-1999-1342 · Other software · ICQ · reported by MITREMedium 5

    ICQ ActiveList Server allows remote attackers to cause a denial of service (crash) via malformed packets to the server's UDP port.

    Product
    Activelist Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 9, 1999Check Point FireWall-1 can be subjected to a denial of service via UDP packets that are sent through VPN-1 to port 0 of a host.CVE-1999-0675 · Other software · Checkpoint · reported by MITREMedium 5

    Check Point FireWall-1 can be subjected to a denial of service via UDP packets that are sent through VPN-1 to port 0 of a host.

    Product
    Firewall-1
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 31, 1999nsd in IRIX 6.5 through 6.5.2 exports a virtual filesystem on a UDP port, which allows remote attackers to view files and cause a possible denial of service by CVE-1999-1485 · Other software · SGI · reported by MITREMedium 6.4

    nsd in IRIX 6.5 through 6.5.2 exports a virtual filesystem on a UDP port, which allows remote attackers to view files and cause a possible denial of service by mounting the nsd virtual file system.

    Product
    Irix
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 1, 1999BMC Patrol allows any remote attacker to flood its UDP port, causing a denial of service.CVE-1999-0921 · Other software · BMC · reported by MITREMedium 5

    BMC Patrol allows any remote attacker to flood its UDP port, causing a denial of service.

    Product
    Patrol Agent
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 1, 1999Remote attackers can perform a denial of service in WebRamp systems by sending a malicious UDP packet to port 5353, changing its IP address.CVE-1999-0438 · Other software · Ramp Networks · reported by MITREMedium 5

    Remote attackers can perform a denial of service in WebRamp systems by sending a malicious UDP packet to port 5353, changing its IP address.

    Product
    Webramp 200i
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 4, 1999nobo 1.2 allows remote attackers to cause a denial of service (crash) via a series of large UDP packets.CVE-1999-1169 · Other software · Flavio Veloso · reported by MITREMedium 5

    nobo 1.2 allows remote attackers to cause a denial of service (crash) via a series of large UDP packets.

    Product
    Nobo
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jan 11, 1999Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.CVE-1999-0063 · Network & remote access · Cisco · reported by MITREMedium 5

    Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.

    Product
    IOS
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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