Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of servic

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• nodejs node.js0.10.0 and later · before 0.10.48
• nodejs node.js0.12.0 and later · before 0.12.17
• nodejs node.js4.0.0 and later · before 4.6.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2025-31498c-ares has a use-after-free in read_answers()
  33Monitor
• CVE-2017-1000381The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the
  31Monitor
• CVE-2026-69184c-ares: CPU-exhaustion denial of service via unbounded DNS name compression pointer chains
  30Monitor
• CVE-2026-33630c-ares : Use-after-free / double-free in c-ares query-completion handling, remotely triggerable via ares_getaddrinfo() over TCP
  30Monitor
• CVE-2025-62408c-ares has a Use After Free vulnerability when connection is cleaned up after error
  23Monitor
• CVE-2020-22217Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function ares_parse_soa_reply in ares_parse_soa_reply.c.
  23Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.