PT-2026-26322 · Wolfssl · Wolfssl

Haruto Kimura · CVE-2026-2646 · Publicado 2026-03-19 · Atualizado 2026-07-14

Positive Technologies (AI Summary)

CVSS v3.1

8.1

Alta

Vetor base

AV:N/AC:H/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 A heap-buffer-overflow issue exists in the wolfSSL d2i SSL SESSION() function. When deserializing session data with SESSION CERTS enabled, the lengths of certificate and session ID are read from untrusted input without validation, potentially leading to a heap memory overflow. A crafted session loaded from an external source is required to trigger this issue. Internal sessions are not affected.

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

Exploit

Memory Corruption

Heap Based Buffer Overflow

Enumeração de Fraquezas

CWE-787

CWE-122

Identificadores relacionados

CVE-2026-2646

JLSEC-2026-702

Produtos afetados

Wolfssl

Referências · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2646.json · Exploit
• https://github.com/wolfSSL/wolfssl · Nota
• https://github.com/wolfSSL/wolfssl/pull/9748 · Correção
• https://github.com/wolfSSL/wolfssl/pull/9949 · Correção
• https://twitter.com/cyberbivash/status/2034703145822032311 · Publicação no Twitter
• https://osv.dev/vulnerability/CVE-2026-2646 · Aviso do Fabricante
• https://twitter.com/CVEnew/status/2036024190772650213 · Publicação no Twitter
• https://osv.dev/vulnerability/JLSEC-2026-702 · Aviso do Fabricante
• https://security-tracker.debian.org/tracker/CVE-2026-2646 · Aviso do Fabricante
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-2646 · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2026-2646 · Nota de Segurança
• https://twitter.com/yo_yo_yo_jbo/status/2035108074231574654 · Publicação no Twitter
• https://cve.org/CVERecord?id=CVE-2026-2646 · Nota de Segurança
• https://github.com/advisories/GHSA-24vq-qfc5-qrmj · Nota
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-2646 · Aviso do Fabricante