# Espressif ESP-IDF vulnerabilities

Source: https://junglewise.ai/threats/technologies/espressif-esp-idf  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/espressif-esp-idf.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 6 vulnerabilities in Espressif ESP-IDF: 0 in the last 7 days and 5 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-113783, was published on 4 November 2026. 4 vulnerabilities in the last four weeks, up 300% on the four before (1). 1 critical against 0.

## Counts

- Last 7 days: 0
- Last 30 days: 3
- Last 90 days: 5
- All time: 6 (2 critical, 0 exploited in the wild)

## About Espressif ESP-IDF

Embedded development framework and toolchain for ESP32 and ESP8266 microcontrollers.

## Latest Espressif ESP-IDF vulnerabilities

- [CVE-2026-113783: Espressif ESP-IDF DNS buffer overflow in lwIP](https://junglewise.ai/threats/cve-2026-113783-esp-idf-is-the-espressif-internet-of-things-iot-development) (high, CVSS 7.4, published 4 Nov 2026)
- [CVE-2026-113782: ESP-IDF OpenThread Border Router buffer overflow in Neighbor Discovery](https://junglewise.ai/threats/cve-2026-113782-esp-idf-is-the-espressif-internet-of-things-iot-development) (high, CVSS 7.1, published 4 Nov 2026)
- [CVE-2026-113780: Espressif ESP-IDF privilege escalation in TEE trap entry](https://junglewise.ai/threats/cve-2026-113780-esf-idf-is-the-espressif-internet-of-things-iot-development) (critical, CVSS 9.3, published 4 Nov 2026)
- [CVE-2026-81507: Espressif ESP-IDF BlueDroid L2CAP out-of-bounds read](https://junglewise.ai/threats/cve-2026-81507-esf-idf-is-the-espressif-internet-of-things-iot-development) (medium, CVSS 6.5, published 13 Oct 2026)
- [CVE-2026-81508: Espressif ESP-IDF out-of-bounds read in BlueDroid A2DP sink](https://junglewise.ai/threats/cve-2026-81508-esf-idf-is-the-espressif-internet-of-things-iot-development) (medium, CVSS 4.3, published 24 Sep 2026)
- [CVE-2025-66409: ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and…](https://junglewise.ai/threats/cve-2025-66409-esf-idf-is-the-espressif-internet-of-things-iot-development) (critical, CVSS 9.1, published 2 Dec 2025)

## Most severe Espressif ESP-IDF vulnerabilities

- [CVE-2026-113780: Espressif ESP-IDF privilege escalation in TEE trap entry](https://junglewise.ai/threats/cve-2026-113780-esf-idf-is-the-espressif-internet-of-things-iot-development) (critical, CVSS 9.3, published 4 Nov 2026)
- [CVE-2025-66409: ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and…](https://junglewise.ai/threats/cve-2025-66409-esf-idf-is-the-espressif-internet-of-things-iot-development) (critical, CVSS 9.1, published 2 Dec 2025)
- [CVE-2026-113783: Espressif ESP-IDF DNS buffer overflow in lwIP](https://junglewise.ai/threats/cve-2026-113783-esp-idf-is-the-espressif-internet-of-things-iot-development) (high, CVSS 7.4, published 4 Nov 2026)
- [CVE-2026-113782: ESP-IDF OpenThread Border Router buffer overflow in Neighbor Discovery](https://junglewise.ai/threats/cve-2026-113782-esp-idf-is-the-espressif-internet-of-things-iot-development) (high, CVSS 7.1, published 4 Nov 2026)
- [CVE-2026-81507: Espressif ESP-IDF BlueDroid L2CAP out-of-bounds read](https://junglewise.ai/threats/cve-2026-81507-esf-idf-is-the-espressif-internet-of-things-iot-development) (medium, CVSS 6.5, published 13 Oct 2026)
- [CVE-2026-81508: Espressif ESP-IDF out-of-bounds read in BlueDroid A2DP sink](https://junglewise.ai/threats/cve-2026-81508-esf-idf-is-the-espressif-internet-of-things-iot-development) (medium, CVSS 4.3, published 24 Sep 2026)

## Vulnerabilities per week

4 vulnerabilities in the last four weeks, up 300% on the four before (1). 1 critical against 0.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 1 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 1 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 3 | 1 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Espressif ESP-IDF vulnerabilities", https://junglewise.ai/threats/technologies/espressif-esp-idf, 13 November 2026.