PT-2026-26339 · Wolfssl · Wolfssl

CVE-2026-3549 · Publicado 2026-03-19 · Atualizado 2026-03-23

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Crítica

Vetor base

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

Name of the Vulnerable Software and Affected Versions wolfSSL (affected versions not specified)

Description An integer underflow existed in the TLS 1.3 Encrypted Client Hello (ECH) extension parsing logic when calculating a buffer length. This resulted in writing beyond the bounds of an allocated buffer, leading to a heap overflow. Note that ECH is off by default in wolfSSL, and the ECH standard is still evolving.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Heap Based Buffer Overflow

Enumeração de Fraquezas

CWE-122

Identificadores relacionados

CVE-2026-3549

Produtos afetados

Wolfssl

Referências · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3549.json · Exploit
• https://github.com/wolfSSL/wolfssl/pull/9817 · Correção
• https://osv.dev/vulnerability/CVE-2026-3549 · Aviso do Fabricante
• https://security-tracker.debian.org/tracker/CVE-2026-3549 · Aviso do Fabricante
• https://ubuntu.com/security/CVE-2026-3549 · Aviso do Fabricante
• https://twitter.com/CVEnew/status/2035992555792277868 · Publicação no Twitter
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-3549 · Aviso do Fabricante
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-3549 · Aviso do Fabricante
• https://cve.org/CVERecord?id=CVE-2026-3549 · Nota de Segurança
• https://twitter.com/infoflowcloud/status/2035994127221862856 · Publicação no Twitter
• https://nvd.nist.gov/vuln/detail/CVE-2026-3549 · Nota de Segurança