CVE-2026-101003

A weakness has been identified in Cesanta Mongoose up to 7.21. Affected by this vulnerability is the function fn of the file tutorials/mqtt/mqtt-server/main.c of the component MQTT Broker. Executing a manipulation can lead to stack-based buffer overflow. The attack can be launched remotely. The...

EUVD-2026-88089

A weakness has been identified in Cesanta Mongoose up to 7.21. Affected by this vulnerability is the function fn of the file tutorials/mqtt/mqtt-server/main.c of the component MQTT Broker. Executing a manipulation can lead to stack-based buffer overflow. The attack can be launched remotely. The...

CVE-2026-101003

Cesanta Mongoose versions up to 7.21 are vulnerable to a stack-based buffer overflow within the MQTT Broker component. The flaw exists in the fn function located in tutorials/mqtt/mqtt-server/main.c. A remote attacker can trigger this vulnerability through a manipulation, potentially leading to a...

CVE-2026-101003 Cesanta Mongoose MQTT Broker main.c fn stack-based overflow

A weakness has been identified in Cesanta Mongoose up to 7.21. Affected by this vulnerability is the function fn of the file tutorials/mqtt/mqtt-server/main.c of the component MQTT Broker. Executing a manipulation can lead to stack-based buffer overflow. The attack can be launched remotely. The...

CVE-2026-101003 Cesanta Mongoose MQTT Broker main.c fn stack-based overflow

A weakness has been identified in Cesanta Mongoose up to 7.21. Affected by this vulnerability is the function fn of the file tutorials/mqtt/mqtt-server/main.c of the component MQTT Broker. Executing a manipulation can lead to stack-based buffer overflow. The attack can be launched remotely. The...

JLSEC-2026-1257 Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function...

Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function mgtlsserverrecvhello, which uses an attacker-controlled sessionidlen byte from a TLS ClientHello as a buffer index without validating it against the length of received data. A remote, unauthenticated...

DEBIAN-CVE-2026-11404

Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function mgtlsserverrecvhello, which uses an attacker-controlled sessionidlen byte from a TLS ClientHello as a buffer index without validating it against the length of received data. A remote, unauthenticated...

EUVD-2026-42605

Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function mgtlsserverrecvhello, which uses an attacker-controlled sessionidlen byte from a TLS ClientHello as a buffer index without validating it against the length of received data. A remote, unauthenticated...

CVE-2026-11404

Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function mgtlsserverrecvhello, which uses an attacker-controlled sessionidlen byte from a TLS ClientHello as a buffer index without validating it against the length of received data. A remote, unauthenticated...

CVE-2026-11404: Out-of-bounds Read

Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function mgtlsserverrecvhello, which uses an attacker-controlled sessionidlen byte from a TLS ClientHello as a buffer index without validating it against the length of received data. A remote, unauthenticated...

Linux Distros Unpatched Vulnerability : CVE-2026-6985

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A weakness has been identified in Cesanta Mongoose up to 7.20. This vulnerability affects the function handleopt of the file /src/netbuiltin.c of the component...

Linux Distros Unpatched Vulnerability : CVE-2026-5244

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A vulnerability has been found in Cesanta Mongoose up to 7.20. This affects the function mgtlsrecvcert of the file mongoose.c of the component TLS 1.3 Handler...

Linux Distros Unpatched Vulnerability : CVE-2025-65502

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Null pointer dereference in addcacerts in Cesanta Mongoose before 7.2 allows remote attackers to cause a denial of service via TLS initialization where...

Linux Distros Unpatched Vulnerability : CVE-2026-5246

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A vulnerability was determined in Cesanta Mongoose up to 7.20. Affected is the function mgtlsverifycertsignature of the file mongoose.c of the component P-384...

Linux Distros Unpatched Vulnerability : CVE-2021-26528

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The mghttpservefile function in Cesanta Mongoose HTTP server 7.0 is vulnerable to remote OOB write attack via connection request after exhausting memory pool...

Linux Distros Unpatched Vulnerability : CVE-2021-26530

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The mgtlsinit function in Cesanta Mongoose HTTPS server 7.0 compiled with OpenSSL support is vulnerable to remote OOB write attack via connection request after...

Linux Distros Unpatched Vulnerability : CVE-2020-25756

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A buffer overflow vulnerability exists in the mggethttpheader function in Cesanta Mongoose 6.18 due to a lack of bounds checking. A crafted HTTP header can...

Linux Distros Unpatched Vulnerability : CVE-2023-2905

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Due to a failure in validating the length of a provided MQTTCMDPUBLISH parsed message with a variable length header, Cesanta Mongoose, an embeddable web server,...

Linux Distros Unpatched Vulnerability : CVE-2026-6986

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This issue affects the function mgaesgcmdecrypt of the file /src/tlsaes128.c of the...

JLSEC-2026-368 A vulnerability was detected in Cesanta Mongoose up to 7.20

A vulnerability was detected in Cesanta Mongoose up to 7.20. This impacts the function mgchacha20poly1305decrypt of the file /src/tlschacha20.c of the component Poly1305 Authentication Tag Handler. The manipulation results in improper verification of cryptographic signature. The attack may be...