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.
11 results
Jun 9, 2026lldpd is an implementation of IEEE 802.1ab (LLDP).CVE-2026-46433 · Other software · lldpd · reported by GitHubMedium 6.5
lldpd is an implementation of IEEE 802.1ab (LLDP). Prior to version 1.0.22, lldpd_decode() in src/daemon/lldpd.c strips 802.1Q VLAN tags from received Ethernet frames by calling memmove() to shift the frame payload 4 bytes left. The third argument (byte count) is s - 2 * ETHER_ADDR_LEN but should be s - 2 * ETHER_ADDR_LEN - 4, causing a 4-byte heap buffer over-read past the malloc(h_mtu) allocation when the received frame size equals the interface MTU. This issue has been patched in version 1.0.22.
- Product
- lldpd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 5, 2023An issue was discovered in lldpd before 1.0.17.CVE-2023-41910 · Other software · Lldpd Project · reported by MITRECritical 9.8
An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a malicious actor can remotely force the lldpd daemon to perform an out-of-bounds read on heap memory. This occurs in cdp_decode in daemon/protocols/cdp.c.
- Product
- Lldpd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 15, 2023In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.CVE-2021-43612 · Other software · Lldpd Project · reported by MITREHigh 7.5
In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.
- Product
- Lldpd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 10, 2021An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to DenCVE-2021-25849 · Other software · Moxa · reported by MITREHigh 7.5
An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to Denial of Service via a crafted lldp packet.
- Product
- Vport 06ec-2v26m Firmware
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 10, 2021Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure CVE-2021-25848 · Other software · Moxa · reported by MITRECritical 9.1
Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure to attackers due to using fixed loop counter variable without checking the actual available length via a crafted lldp packet.
- Product
- Vport 06ec-2v26m Firmware
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 10, 2021Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure CVE-2021-25847 · Other software · Moxa · reported by MITRECritical 9.1
Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure to attackers due to controllable loop counter variable via a crafted lldp packet.
- Product
- Vport 06ec-2v26m Firmware
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 10, 2021Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows attackers to cause a denial of serviceCVE-2021-25846 · Other software · Moxa · reported by MITREHigh 7.5
Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows attackers to cause a denial of service due to a negative number passed to the memcpy function via a crafted lldp packet.
- Product
- Vport 06ec-2v26m Firmware
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 10, 2021Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows attackers to cause a denial of serviceCVE-2021-25845 · Other software · Moxa · reported by MITREHigh 7.5
Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows attackers to cause a denial of service due to a NULL pointer dereference via a crafted lldp packet.
- Product
- Vport 06ec-2v26m Firmware
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 18, 2021A flaw was found in multiple versions of OpenvSwitch.CVE-2020-27827 · Other software · Lldpd Project · reported by Red HatHigh 7.5
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
- Product
- Lldpd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.redhat.comcert-portal.siemens.com
Jan 28, 2020lldpd before 0.8.0 allows remote attackers to cause a denial of service (assertion failure and daemon crash) via a malformed packet.CVE-2015-8012 · Other software · Lldpd Project · reported by MITREHigh 7.5
lldpd before 0.8.0 allows remote attackers to cause a denial of service (assertion failure and daemon crash) via a malformed packet.
- Product
- Lldpd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comopenwall.com
Jan 28, 2020Buffer overflow in the lldp_decode function in daemon/protocols/lldp.c in lldpd before 0.8.0 allows remote attackers to cause a denial of service (daemon crash)CVE-2015-8011 · Other software · Lldpd Project · reported by MITRECritical 9.8
Buffer overflow in the lldp_decode function in daemon/protocols/lldp.c in lldpd before 0.8.0 allows remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via vectors involving large management addresses and TLV boundaries.
- Product
- Lldpd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comopenwall.com
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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