C-Ares
9 CVEs across 1 C-Ares products. Browse C-Ares vulnerabilities, severities, and proof-of-concept exploits.
C-Ares products with known CVEs
C-Ares CVEs — newest first| CVE | Severity | Score | Published | Summary |
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CVE-2025-62408 | Medium | 5.9 | 2025-12-08 | c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answe… |
CVE-2025-31498 | | | 2025-04-08 | c-ares is an asynchronous resolver library. From 1.32.3 through 1.34.4, there is a use-after-free in read_answers() when process_answer() may re-enqueue a quer… |
CVE-2024-25629 | Medium | 4.4 | 2024-02-23 | c-ares is a C library for asynchronous DNS requests. `ares__read_line()` is used to parse local configuration files such as `/etc/resolv.conf`, `/etc/nsswitch… |
CVE-2020-22217 | Medium | 5.9 | 2023-08-22 | 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. |
CVE-2023-32067 | High | 7.5 | 2023-05-25 | c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP… |
CVE-2023-31147 | Medium | 5.9 | 2023-05-25 | c-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS que… |
CVE-2023-31130 | Medium | 4.1 | 2023-05-25 | c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2"… |
CVE-2023-31124 | Low | 3.7 | 2023-05-25 | c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools build system, CARES_RANDOM_FILE will not be set, as seen when c… |
CVE-2020-14354 | Low | 3.3 | 2021-05-13 | 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. This flaw possibly a… |
CVE-2017-1000381 | High | 7.5 | 2017-07-07 | 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… |
CVE-2016-5180 | Critical | 9.8 | 2016-10-03 | 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 wr… |