CVE•Published 2026-04-10•Modified 2026-04-29•1 article on news•6 live references•NVD data

CVE-2026-5393Wolfssl · Wolfssl

Vulnerability data via NVD (ingested)

CVSS v3.1

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 87% of all CVEs

Weaknesses (CWE)

CWE-125Out-of-bounds Read

Description

Dual-Algorithm CertificateVerify out-of-bounds read. When processing a dual-algorithm CertificateVerify message, an out-of-bounds read can occur on crafted input. This can only occur when --enable-experimental and --enable-dual-alg-certs is used when building wolfSSL.

Timeline

Published 2026-04-10

Modified 2026-04-29

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-5393

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Wolfssl Wolfssl"

All exposed Wolfssl Wolfssl instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Wolfssl"

HTTP body or banner mentions "Wolfssl" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-5393