TI-2026-48538 CVE-2026-69186
c-ares: Memory-amplification denial of service via unvalidated DNS header record counts
Priority MEDIUM 63
c-ares is an asynchronous resolver library.
c-ares
Records14All Threatist records
Exploited (KEV)0None in CISA KEV
CVSS critical1CVSS 9.0–10.0
CVSS high5CVSS 7.0–8.9
Exploited now
c-ares records in CISA KEVNo c-ares vulnerabilities are listed in CISA KEV.
Components
Products in the NVD configurations · select one to filter the recordsRecords
14 records
TI-2020-14305 CVE-2020-22217 · GHSA-88q4-8vpj-fqpg
Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function…
Priority MEDIUM 60
Buffer 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.
TI-2016-04481 CVE-2016-5180 · GHSA-29hr-5wcr-whpc
Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0…
Priority MEDIUM 53
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 service (out-of-bounds write) or possibly execute arbitrary code via a hostname with a…
TI-2023-15371 CVE-2023-32067
0-byte UDP payload DoS in c-ares
Priority MEDIUM 42
c-ares is an asynchronous resolver library.
TI-2026-26011 CVE-2026-33630
Double free in c-ares
Priority MEDIUM 40
c-ares is an asynchronous resolver library.
TI-2026-48536 CVE-2026-69184
c-ares: CPU-exhaustion denial of service via unbounded DNS name compression pointer chains
Priority LOW 39
c-ares is an asynchronous resolver library.
TI-2017-14601 CVE-2017-1000381 · GHSA-vjr3-54h8-whpv
The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR…
Priority LOW 39
The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particu…
TI-2025-22678 CVE-2025-31498
c-ares has a use-after-free in read_answers()
Priority LOW 37
c-ares is an asynchronous resolver library.
Priority LOW 31
c-ares is an asynchronous resolver library.
TI-2023-14840 CVE-2023-31130
Buffer Underwrite in ares_inet_net_pton()
Priority LOW 29
c-ares is an asynchronous resolver library.
TI-2025-38675 CVE-2025-62408
c-ares has a Use After Free vulnerability when connection is cleaned up after error
Priority LOW 27
c-ares is an asynchronous resolver library.
TI-2024-16857 CVE-2024-25629
c-ares out of bounds read in ares__read_line()
Priority LOW 25
c-ares is a C library for asynchronous DNS requests.
Priority LOW 19
c-ares is an asynchronous resolver library.
TI-2020-11224 CVE-2020-14354 · GHSA-xxmg-3gv9-85h2
Buffer overflow in c-ares
Priority LOW 17
A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing.