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.
10 results
Jul 13, 2026A Denial of Service (DoS) vulnerability exists in the receive loop of libmodbus 3.1.12 when running on Windows.CVE-2026-51539 · Other software · reported by MITREHigh 7.5
A Denial of Service (DoS) vulnerability exists in the receive loop of libmodbus 3.1.12 when running on Windows. The issue stems from improper timeout management during network read operations.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgist.github.comgithub.com
Feb 27, 2025Stack-based Buffer Overflow vulnerability in libmodbus v3.1.10 allows to overflow the buffer allocated for the Modbus response if the function tries to reply toCVE-2024-10918 · Other software · libmodbus · reported by prodsec@nozominetworks.comMedium 4.8
Stack-based Buffer Overflow vulnerability in libmodbus v3.1.10 allows to overflow the buffer allocated for the Modbus response if the function tries to reply to a Modbus request with an unexpected length.
- Product
- libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordnozominetworks.comlists.debian.org
May 31, 2024An invalid pointer in the modbus_receive() function of libmodbus v3.1.6 allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unCVE-2024-36845 · Other software · libmodbus · reported by MITREMedium 4.3
An invalid pointer in the modbus_receive() function of libmodbus v3.1.6 allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.
- Product
- libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 31, 2024libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer.CVE-2024-36844 · Other software · libmodbus · reported by MITREHigh 7.5
libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.
- Product
- libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 31, 2024libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function.CVE-2024-36843 · Other software · libmodbus · reported by MITREHigh 7.5
libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function.
- Product
- libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2024libmodbus v3.1.10 is vulnerable to Buffer Overflow via the modbus_write_bits function.CVE-2024-34244 · Other software · libmodbus · reported by MITREHigh 7.5
libmodbus v3.1.10 is vulnerable to Buffer Overflow via the modbus_write_bits function. This issue can be triggered when the function is fed with specially crafted input, which leads to out-of-bounds read and can potentially cause a crash or other unintended behaviors.
- Product
- libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 1, 2024libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c.CVE-2023-26793 · Other software · libmodbus · reported by MITRECritical 9.8
libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c.
- Product
- libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 29, 2022A heap-based buffer overflow flaw was found in libmodbus in function modbus_reply() in src/modbus.c.CVE-2022-0367 · Other software · Libmodbus · reported by Red HatHigh 7.8
A heap-based buffer overflow flaw was found in libmodbus in function modbus_reply() in src/modbus.c.
- Product
- Libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.redhat.comgithub.com
Jul 31, 2019An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5.CVE-2019-14463 · Other software · Libmodbus · reported by MITRECritical 9.1
An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUS_FC_WRITE_MULTIPLE_REGISTERS case, aka VD-1301.
- Product
- Libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlibmodbus.org
Jul 31, 2019An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5.CVE-2019-14462 · Other software · Libmodbus · reported by MITRECritical 9.1
An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUS_FC_WRITE_MULTIPLE_COILS case, aka VD-1302.
- Product
- Libmodbus
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlibmodbus.org
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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