espressif/mdns has Uncontrolled Recursion in mDNS Name Decompression
- Exploited
- No known exploitation
- Fix
- Fixed in 1.11.2
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 1.11.2.
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 7/100 · provisional
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
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.
cve.now Index
- Exploitation0/40No signal
- Exposure?/25Unknown. No advisory context yet
- Reach?/20Unknown. No tracked technology or package matched
- Severity6.5/10CVSS 6.5
- No patch0/5No signal
What would change the score
- Would score about 62 if added to CISA KEV
- Would score about 57 if CISA's SSVC rates exploitation active
- Would score about 29 if advisories confirm default setups are exposed
What to do
Upgrade to a fixed version: 1.11.2.
Timeline
- First seen by cve.now6 days
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- espressif esp-protocols
fixed in 1.11.2
Evidence 3
- Advisory
- Repository
- Repository
Corrections
None so far.
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Questions about CVE-2026-64860
Is CVE-2026-64860 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-64860?
esp-protocols: before 1.11.2.Source: cve.now feed data
How do I fix CVE-2026-64860?
Upgrade to a fixed version: 1.11.2.Source: cve.now feed data