CVE-2026-64860

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{"affected": [{"affectedData": [{"product": "esp-protocols", "vendor": "espressif", "versions": [{"status": "affected", "version": "< 1.11.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-64860", "lastModified": "2026-11-12T22:18:35.610", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64860", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T17:27:02.630803Z", "version": "2.0.3"}}]}, "published": "2026-10-30T13:19:38.980", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/espressif/esp-protocols/commit/95c882c7d7d661d28d4685bd052b024154a8402f"}, {"source": "security-advisories@github.com", "url": "https://github.com/espressif/esp-protocols/releases/tag/mdns-v1.11.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/espressif/esp-protocols/security/advisories/GHSA-7fpr-vjw5-2c86"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-674"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "mdns: mdns: Denial of Service via uncontrolled recursion in domain name parsing", "id": "2567672", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567672"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in the mdns component. This flaw allows an unauthenticated attacker on the same local network to cause a Denial of Service (DoS) by sending specially crafted multicast DNS (mDNS) packets. Because the component parses domain name compression pointers recursively without enforcing a depth limit, processing these packets exhausts system memory and forces the device into a continuous crash and reboot loop."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-64860", "public_date": "2026-11-05T14:11:08Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64860\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64860\nhttps://github.com/espressif/esp-protocols/commit/95c882c7d7d661d28d4685bd052b024154a8402f\nhttps://github.com/espressif/esp-protocols/releases/tag/mdns-v1.11.2\nhttps://github.com/espressif/esp-protocols/security/advisories/GHSA-7fpr-vjw5-2c86"], "statement": "This vulnerability is rated as Moderate because exploitation is restricted to adjacent network attackers and results solely in a denial of service without compromising system confidentiality or integrity. Red Hat products do not distribute the ESP-IDF or ESP-Protocols embedded software libraries, as they are designed specifically for microcontroller environments. Consequently, standard Red Hat enterprise deployments are not exposed to this issue.", "threat_severity": "Moderate"}

{"created": "2026-11-05T16:00:19.825194+00:00", "updated": "2026-11-06T14:30:06.078971+00:00", "vendors": []}