C-ares
19 CVEs tracked. None of them is in CISA KEV.
This hub aggregates every CVE we track for C-ares, a product in the oss libraries space. Use it to gauge the current risk picture and drill into individual advisories.
C-ares CVEs per month
| Month | CVEs |
|---|---|
| 2024-10 | 0 |
| 2024-11 | 0 |
| 2024-12 | 0 |
| 2025-01 | 0 |
| 2025-02 | 0 |
| 2025-03 | 0 |
| 2025-04 | 1 |
| 2025-05 | 0 |
| 2025-06 | 0 |
| 2025-07 | 0 |
| 2025-08 | 0 |
| 2025-09 | 0 |
| 2025-10 | 0 |
| 2025-11 | 0 |
| 2025-12 | 1 |
| 2026-01 | 0 |
| 2026-02 | 0 |
| 2026-03 | 0 |
| 2026-04 | 0 |
| 2026-05 | 0 |
| 2026-06 | 0 |
| 2026-07 | 0 |
| 2026-08 | 0 |
| 2026-09 | 3 |
Severity
How the 19 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.
- Critical1
- High8
- Medium8
- Low2
Latest CVEs
The 15 most recently published vulnerabilities affecting C-ares.
- CVE-2026-69184c-ares: CPU-exhaustion denial of service via unbounded DNS name compression pointer chains7.5
- CVE-2026-69186c-ares: Memory-amplification denial of service via unvalidated DNS header record counts5.3
- CVE-2026-33630c-ares : Use-after-free / double-free in c-ares query-completion handling, remotely triggerable via ares_getaddrinfo() over TCP7.5
- CVE-2025-62408c-ares has a Use After Free vulnerability when connection is cleaned up after error5.9
- CVE-2025-31498c-ares has a use-after-free in read_answers()7.0
- CVE-2024-25629c-ares out of bounds read in ares__read_line()4.4
- 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.5.9
- CVE-2023-320670-byte UDP payload DoS in c-ares7.5
- CVE-2023-31147Insufficient randomness in generation of DNS query IDs in c-ares5.9
- CVE-2023-31130Buffer Underwrite in ares_inet_net_pton()4.1
- CVE-2023-31124AutoTools does not set CARES_RANDOM_FILE during cross compilation3.7
- CVE-2022-4904A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity of the input string, which allows a possible arbitrary length stack overflow. This issue may cause...8.6
- CVE-2021-3672A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to ...5.6
- CVE-2020-14354A 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 allows an attacker to crash the service...3.3
- CVE-2020-8277A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the app...7.5
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