lwIP through 2.2.1 contains a stack out-of-bounds write vulnerability in mdns_handle_response that allows adjacent attackers to corrupt stack memory by sending mDNS responses with invalid domain names. Attackers on the local link can send multicast PTR answers with oversized RDLENGTH or SRV answers with RDLENGTH below 6 during a service search, overflowing a 256-byte stack buffer and crashing the device.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sun, 18 Oct 2026 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | lwIP through 2.2.1 contains a stack out-of-bounds write vulnerability in mdns_handle_response that allows adjacent attackers to corrupt stack memory by sending mDNS responses with invalid domain names. Attackers on the local link can send multicast PTR answers with oversized RDLENGTH or SRV answers with RDLENGTH below 6 during a service search, overflowing a 256-byte stack buffer and crashing the device. | |
| Title | lwIP through 2.2.1 Stack Out-of-Bounds Write via mDNS Search Response Handler | |
| First Time appeared |
Lwip Project
Lwip Project lwip |
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| Weaknesses | CWE-121 | |
| CPEs | cpe:2.3:a:lwip_project:lwip:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Lwip Project
Lwip Project lwip |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-18T12:19:52.023Z
Reserved: 2026-10-18T12:00:07.926Z
Link: CVE-2026-112062
No data.
Status : Received
Published: 2026-10-18T13:16:38.750
Modified: 2026-10-18T13:16:38.750
Link: CVE-2026-112062
No data.
OpenCVE Enrichment
No data.
Weaknesses