CVE•Published 2026-04-01•Modified 2026-06-05•1 article on news•6 live references•NVD data
CVE-2026-34873Trustedfirmware · Mbed_tls
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:H/A:N
EPSS percentile
12
Exploit Prediction Scoring System · top 88% of all CVEs
Weaknesses (CWE)
Description
An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
Timeline
Published 2026-04-01
Modified 2026-06-05
External references
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-2026-34873Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Trustedfirmware Mbed Tls"All exposed Trustedfirmware Mbed Tls instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Mbed Tls"HTTP body or banner mentions "Mbed Tls" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-34873Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-34873Censys host search filtered to this CVE id.
grep.app
CVE-2026-34873Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-34873GitHub code search for direct mentions.
Google dork
"CVE-2026-34873" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-34873 on GitHub.