JLSEC-2026-367 A security vulnerability has been detected in Cesanta Mongoose up to 7.20

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

Linux Distros Unpatched Vulnerability : CVE-2026-2967

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 affects the function getpeer of the file /src/netbuiltin.c of the component TCP...

CVE-2026-2967

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

DEBIAN-CVE-2026-2967

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

UBUNTU-CVE-2026-2967

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

CVE-2026-2967

The CVE-2026-2967 entry describes a vulnerability in Cesanta Mongoose up to version 7.20, specifically in the getpeer function of /src/net_builtin.c within the TCP Sequence Number Handler. The underlying issue is improper verification of the source of a communication channel, potentially enabling...

CVE-2026-2967 Cesanta Mongoose TCP Sequence Number net_builtin.c getpeer verification of source

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

CVE-2026-2967 Cesanta Mongoose TCP Sequence Number net_builtin.c getpeer verification of source

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

CVE-2026-2967

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

CVE-2026-2967 Cesanta Mongoose TCP Sequence Number net_builtin.c getpeer verification of source

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

CVE-2026-2967

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

PT-2026-21494

Name of the Vulnerable Software and Affected Versions Cesanta Mongoose versions prior to 7.21 Description A security issue exists in Cesanta Mongoose. The getpeer function within the TCP Sequence Number Handler component, located in /src/net builtin.c, does not properly verify the source of a...

CVE-2026-2967: Improper Verification of Source of a Communication Channel

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...

Cesanta Mongoose 安全漏洞

Cesanta Mongoose is a set of embedded server libraries developed by the Irish company Cesanta. It includes functions for TCP and HTTP clients and servers, as well as WenSocket clients and servers. Versions of Cesanta Mongoose 7.20 and earlier contained security vulnerabilities. These...

CVE-2026-2967

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/netbuiltin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiate...