Patch Forecast
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CVE-2026-113782

ESP-IDF is the Espressif Internet of Things (IOT) Development Framework

Risk score
43/100
CVSS
7.1 v3.1
Published
4 Nov 2026

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What to know

What it is
ESP-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.2.0 until 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.3, the OpenThread Border Router Neighbor Discovery packet handler trusts an attacker-controlled ICMPv6 option length while copying into a fixed stack buffer. A host on the same infrastructure l…
Affected
See advisory
Fix
Upgrade the product to 5.2.8, 5.3.6, 5.5.5, 6.0.3 or 5.4.5 (whichever matches your release line), or later.
Exploitation
No known exploitation

Why it is Yellow

  • CVSS 7.1 high

References

Original description

ESP-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.2.0 until 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.3, the OpenThread Border Router Neighbor Discovery packet handler trusts an attacker-controlled ICMPv6 option length while copying into a fixed stack buffer. A host on the same infrastructure link as the Border Router can send a crafted ICMPv6 Router Advertisement to its infrastructure interface whose oversized length causes an out-of-bounds write into adjacent stack memory. Firmware is affected only when CONFIG_OPENTHREAD_BORDER_ROUTER=y; Thread end devices, routers, and RCP firmware without the Border Router feature are unaffected. Exploitation requires no authentication or user interaction and can crash or reboot the device or corrupt adjacent stack state. This issue is fixed in versions 5.2.8, 5.3.6, 5.5.5, and 6.0.3 and is scheduled to be fixed in version 5.4.5.

Last activity 4 Nov 2026. Patch Forecast updates every hour.