CVE-2026-112062
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.
Published:Oct 18, 2026
Last Modified:Oct 19, 2026
EPS:Oct 18, 2026
EPSS Score:0.00218
CVSS Score:5.9
Affected Products
Vendor
Product
Action
Vendor
Lwip
Product
Lwip
Lwip
Lwip
Vendor
Lwip Project
Product
Lwip
Lwip Project
Lwip
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
