CVE•Published 2026-06-10•Modified 2026-07-23•1 article on news•5 live references•NVD data
CVE-2026-45328Espressif · Esp-idf
Vulnerability data via NVD (ingested)
CVSS v3.1
9.3
CRITICAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS percentile
3
Exploit Prediction Scoring System · top 97% of all CVEs
Weaknesses (CWE)
Description
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.4 and 6.0, the esp_tee component exposes secure-service wrappers in esp_secure_services.c and esp_secure_services_iram.c that bridge calls from the user application (i.e. the REE) to TEE-protected hardware peripherals (AES, SHA, ECC, HMAC, SPI, MMU, WDT) and to the security feature like attestation, OTA updates, secure storage. This issue has been patched in versions 5.5.5 and 6.0.1.
Timeline
Published 2026-06-10
Modified 2026-07-23
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-2026-45328Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Espressif Esp-idf" version:"5.5.4"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Esp-idf"HTTP body or banner mentions "Esp-idf" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-45328Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-45328Censys host search filtered to this CVE id.
grep.app
CVE-2026-45328Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-45328GitHub code search for direct mentions.
Google dork
"CVE-2026-45328" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.