CVE-2026-5245

Summary

A vulnerability was found in Cesanta Mongoose up to 7.20. This impacts the function handle_mdns_record of the file mongoose.c of the component mDNS Record Handler. Performing a manipulation of the argument buf results in stack-based buffer overflow. Remote exploitation of the attack is possible. A high degree of complexity is needed for the attack. The exploitability is said to be difficult. The exploit has been made public and could be used. Upgrading to version 7.21 will fix this issue. The patch is named 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Affected Software

VendorProductVersion RangeStatus
CesantaMongoose7.0affected
CesantaMongoose7.1affected
CesantaMongoose7.2affected
CesantaMongoose7.3affected
CesantaMongoose7.4affected
CesantaMongoose7.5affected
CesantaMongoose7.6affected
CesantaMongoose7.7affected
CesantaMongoose7.8affected
CesantaMongoose7.9affected
CesantaMongoose7.10affected
CesantaMongoose7.11affected
CesantaMongoose7.12affected
CesantaMongoose7.13affected
CesantaMongoose7.14affected
CesantaMongoose7.15affected
CesantaMongoose7.16affected
CesantaMongoose7.17affected
CesantaMongoose7.18affected
CesantaMongoose7.19affected
CesantaMongoose7.20affected
CesantaMongoose7.21unaffected

Weaknesses

  • CWE-121: Stack-based Buffer Overflow
  • CWE-119: Memory Corruption

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References