avahi 関連製品全体の CVE とセキュリティ脆弱性情報を集約し、CVSS、EPSS、公開日、脆弱性情報データを掲載しています。
過去の問題は主に パス処理の欠陥 and vendor risk denial of service などに関し、一部は ファイル上書き を招き、vendor surface software deployment and vendor surface production workloads 関連の場面に影響します。
掲載データは公開脆弱性情報とセキュリティ公告に基づき、過去の暴露面と修補優先度の評価に利用できます。
| CVE | 概要 | ソース | CVSS 最大値 | EPSS（%） | 公開 | 更新 |
|---|---|---|---|---|---|---|
| CVE-2026-34933 | Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a single D-Bus method call with conflicting publish flags. This issue has been patched in version 0.9-rc4. | [email protected] | 5.5 | 0.01% | 2026-04-03 | 2026-04-13 |
| CVE-2026-24401 | Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., "h.local" as a CNAME for "h.local"). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects rec | [email protected] | 6.5 | 0.06% | 2026-01-24 | 2026-02-12 |
| CVE-2025-68471 | Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements with CNAME resource records 2 seconds apart. | [email protected] | 6.5 | 0.03% | 2026-01-12 | 2026-01-16 |
| CVE-2025-68468 | Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending unsolicited announcements containing CNAME resource records pointing it to resource records with short TTLs. As soon as they expire avahi-daemon crashes. | [email protected] | 6.5 | 0.03% | 2026-01-12 | 2026-01-16 |
| CVE-2025-68276 | Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling the RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves. | [email protected] | 5.5 | 0.01% | 2026-01-12 | 2026-01-16 |
| CVE-2025-59529 | Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions up to and including 0.9-rc2, the simple protocol server ignores the documented client limit and accepts unlimited connections, allowing for easy local DoS. Although `CLIENTS_MAX` is defined, `server_work()` unconditionally `accept()`s and `client_new()` always appends the new client and increments `n_clients`. There is no check against the limit. When client cannot be accepted | [email protected] | 5.5 | 0.06% | 2025-12-18 | 2026-01-16 |
| CVE-2023-38473 | A vulnerability was found in Avahi. A reachable assertion exists in the avahi_alternative_host_name() function. | [email protected] | 6.2 | 0.01% | 2023-11-02 | 2025-11-03 |
| CVE-2023-38472 | A vulnerability was found in Avahi. A reachable assertion exists in the avahi_rdata_parse() function. | [email protected] | 6.2 | 0.01% | 2023-11-02 | 2025-11-03 |
| CVE-2023-38471 | A vulnerability was found in Avahi. A reachable assertion exists in the dbus_set_host_name function. | [email protected] | 6.2 | 0.04% | 2023-11-02 | 2025-11-03 |
| CVE-2023-38470 | A vulnerability was found in Avahi. A reachable assertion exists in the avahi_escape_label() function. | [email protected] | 6.2 | 0.01% | 2023-11-02 | 2025-11-03 |
| CVE-2023-38469 | A vulnerability was found in Avahi, where a reachable assertion exists in avahi_dns_packet_append_record. | [email protected] | 6.2 | 0.01% | 2023-11-02 | 2025-11-03 |
| CVE-2023-1981 | A vulnerability was found in the avahi library. This flaw allows an unprivileged user to make a dbus call, causing the avahi daemon to crash. | [email protected] | 5.5 | 0.02% | 2023-05-26 | 2025-11-03 |
| CVE-2021-3468 | A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered. | [email protected] | 5.5 | 0.04% | 2021-06-02 | 2024-11-21 |
| CVE-2021-3502 | A flaw was found in avahi 0.8-5. A reachable assertion is present in avahi_s_host_name_resolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability. | [email protected] | 5.5 | 0.04% | 2021-05-07 | 2024-11-21 |
| CVE-2021-26720 | avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product. | [email protected] | 7.8 | 0.07% | 2021-02-17 | 2024-11-21 |
| CVE-2017-6519 | avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive information from the responding device via port-5353 UDP packets. NOTE: this may overlap CVE-2015-2809. | [email protected] | 9.1 | 1.29% | 2017-05-01 | 2026-05-13 |
| CVE-2011-1002 | avahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 allows remote attackers to cause a denial of service (infinite loop) via an empty mDNS (1) IPv4 or (2) IPv6 UDP packet to port 5353. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-2244. | [email protected] | 5.0 | 57.72% | 2011-02-22 | 2026-04-29 |
| CVE-2010-2244 | The AvahiDnsPacket function in avahi-core/socket.c in avahi-daemon in Avahi 0.6.16 and 0.6.25 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a DNS packet with an invalid checksum followed by a DNS packet with a valid checksum, a different vulnerability than CVE-2008-5081. | [email protected] | 4.3 | 0.91% | 2010-07-08 | 2026-04-29 |
| CVE-2009-0758 | The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0.6.23 does not account for the network byte order of a port number when processing incoming multicast packets, which allows remote attackers to cause a denial of service (network bandwidth and CPU consumption) via a crafted legacy unicast mDNS query packet that triggers a multicast packet storm. | [email protected] | 7.8 | 1.12% | 2009-03-03 | 2026-04-23 |
| CVE-2008-5081 | The originates_from_local_legacy_unicast_socket function (avahi-core/server.c) in avahi-daemon in Avahi before 0.6.24 allows remote attackers to cause a denial of service (crash) via a crafted mDNS packet with a source port of 0, which triggers an assertion failure. | [email protected] | 5.0 | 77.08% | 2008-12-17 | 2026-04-23 |