CVE-2026-64860 (GCVE-0-2026-64860)
Vulnerability from cvelistv5 – Published: 2026-11-05 14:11 – Updated: 2026-11-05 17:27
VLAI
EPSS
VEX
Title
espressif/mdns has Uncontrolled Recursion in mDNS Name Decompression
Summary
ESP-Protocols is a collection of protocol components for ESP-IDF. Prior to mDNS version 1.11.2, the `mdns` component follows DNS name-compression pointers recursively when parsing fully qualified domain names (FQDNs) in inbound mDNS packets without capping pointer-follow depth in `mdns_utils_read_fqdn()`. An unauthenticated attacker on the same link-local network can send a crafted packet to UDP port 5353 on an `ESP-IDF` device using `espressif/mdns` with mDNS enabled. Deep recursion exhausts the fixed-size stack of the mDNS FreeRTOS task, causing a controlled panic and reboot; persistent malicious traffic can cause a crash loop. No confidentiality or integrity impact has been demonstrated, and remote code execution is not claimed. This issue is fixed in mDNS version 1.11.2.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 17:27 UTC
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/espressif/esp-protocols/securi… | x_refsource_CONFIRM |
| https://github.com/espressif/esp-protocols/commit… | x_refsource_MISC |
| https://github.com/espressif/esp-protocols/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| espressif | esp-protocols |
Affected:
< 1.11.2
|
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