CVE-2026-45328

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 97% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
2.7%
KEV
Not listed

Published

June 10, 2026

Last Modified

June 11, 2026

Advisory Details (7)

Auto-updated Jun 10, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Out-of-Bounds Write in ESP-TEE Secure Service Wrappers · Advisory · espressif/esp-idf · GitHub

https://github.com/espressif/esp-idf/security/advisories/GHSA-mmgp-73p4-92xp
github_commit

commit eebabaff2fdc (espressif/esp-idf)

Fix landed in espressif/esp-idf commit eebabaff2fdc — awaiting tagged release

https://github.com/espressif/esp-idf/commit/eebabaff2fdc273b1530fe66e55fb3bcd181dfd6
github_commit

commit afd14ab113ac (espressif/esp-idf)

Fix landed in espressif/esp-idf commit afd14ab113ac — awaiting tagged release

https://github.com/espressif/esp-idf/commit/afd14ab113acd0ca369965404c99ac42e74d4fcd
github_commit

commit 7867f4a57560 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 7867f4a57560 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/7867f4a57560bf9fc4a931e37ba02b7a3e9f406b
github_commit

commit 764626a1b7c8 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 764626a1b7c8 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/764626a1b7c85b943d207da08a2f8f7d7f3def4d
github_commit

commit 440a5d190650 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 440a5d190650 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/440a5d1906502023f2a0fb0aecbdf0602d14acbf
github_commit

commit 145ba4c42dc8 (espressif/esp-idf)

Fix landed in espressif/esp-idf commit 145ba4c42dc8 — awaiting tagged release

https://github.com/espressif/esp-idf/commit/145ba4c42dc8283054cfde9a1c3470db7399192f

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 17× in last 7d / 87× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 116 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:43 UTCEG score recompute
  3. 2026-07-15 01:53 UTCEG score recompute
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  24. 2026-07-05 22:54 UTCEG score recompute
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  1. 2026-07-04 23:03 UTCEG score recompute
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  10. 2026-06-30 23:22 UTCEPSS rescore
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  36. 2026-06-23 15:27 UTCEG score recompute
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  47. 2026-06-20 17:34 UTCEG score recompute
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  50. 2026-06-19 19:25 UTCEPSS rescore
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  63. 2026-06-15 17:49 UTCEPSS rescore
  64. 2026-06-15 14:59 UTCEG score recompute
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  66. 2026-06-14 16:56 UTCEG score recompute
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  68. 2026-06-13 23:00 UTCEPSS rescore
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  71. 2026-06-12 23:12 UTCEPSS rescore
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  73. 2026-06-12 20:52 UTCEG score recompute
  74. 2026-06-12 09:50 UTCEG score recompute
  75. 2026-06-11 22:49 UTCEG score recompute▼ 0.50

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Frequently asked(5)

What is CVE-2026-45328?
CVE-2026-45328 is a high vulnerability published on June 10, 2026. ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.4 and 6.0, the esptee component exposes secure-service wrappers in espsecureservices.c and espsecureservicesiram.c that bridge calls from the user application (i.e. the REE) to TEE-protected hardware…
When was CVE-2026-45328 disclosed?
CVE-2026-45328 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on June 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45328 actively exploited?
CVE-2026-45328 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45328?
CVE-2026-45328 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-45328?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45328, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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