PT-2026-56811 · Cesanta · Mongoose

Shukhratbek Uraiimov · Publicado 2026-07-09 · Atualizado 2026-07-09 · CVE-2026-11404

Mitre

CVSS v3.1

7.5

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function mg tls server recv hello(), which uses an attacker-controlled session id len byte from a TLS ClientHello as a buffer index without validating it against the length of received data. A remote, unauthenticated attacker can send a single crafted ClientHello with an oversized session id length to read past the receive buffer, crashing any HTTPS, MQTTS, or WSS service built on MG TLS BUILTIN.

Correção

Out of bounds Read

Enumeração de Fraquezas

CWE-125

Identificadores relacionados

CVE-2026-11404

Produtos afetados

Mongoose

Referências · 5

• https://github.com/cesanta/mongoose · Nota
• https://github.com/cesanta/mongoose/commit/c288ac1f38424ffdd4d2fd5e1893fd4962642db3 · Correção
• https://vulncheck.com/advisories/cesanta-mongoose-out-of-bounds-read-in-mg-tls-builtin-clienthello-session-id-parsing · Nota
• https://github.com/cesanta/mongoose/releases/tag/7.22 · Correção
• https://nvd.nist.gov/vuln/detail/CVE-2026-11404 · Nota de Segurança