{"id":"OESA-2025-1974","summary":"unbound security update","details":"Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. To help increase online privacy, Unbound supports DNS-over-TLS which allows clients to encrypt their communication. Unbound is available for most platforms such as FreeBSD, OpenBSD, NetBSD, MacOS, Linux and Microsoft Windows. Unbound is a totally free, open source software under the BSD license. It doesn't make custom builds or provide specific features to paying customers only.\r\n\r\nSecurity Fix(es):\n\nNLnet Unbound is an open source DNS server for the Netherlands NLnet team.\n NLnet Unbound has a security vulnerability that originates from the risk of cache poisoning when supporting EDNS Client Subnet, which may lead to Rebirthday attacks.(CVE-2025-5994)","modified":"2026-08-18T01:18:02.934860185Z","published":"2025-08-08T11:09:03Z","upstream":["CVE-2025-5994"],"database_specific":{"severity":"High"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1974"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5994"}],"affected":[{"package":{"name":"unbound","ecosystem":"openEuler:22.03-LTS-SP3","purl":"pkg:rpm/openEuler/unbound&distro=openEuler-22.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13.2-18.oe2203sp3"}]}],"ecosystem_specific":{"aarch64":["python3-unbound-1.13.2-18.oe2203sp3.aarch64.rpm","unbound-1.13.2-18.oe2203sp3.aarch64.rpm","unbound-anchor-1.13.2-18.oe2203sp3.aarch64.rpm","unbound-debuginfo-1.13.2-18.oe2203sp3.aarch64.rpm","unbound-debugsource-1.13.2-18.oe2203sp3.aarch64.rpm","unbound-devel-1.13.2-18.oe2203sp3.aarch64.rpm","unbound-help-1.13.2-18.oe2203sp3.aarch64.rpm","unbound-libs-1.13.2-18.oe2203sp3.aarch64.rpm"],"src":["unbound-1.13.2-18.oe2203sp3.src.rpm"],"x86_64":["python3-unbound-1.13.2-18.oe2203sp3.x86_64.rpm","unbound-1.13.2-18.oe2203sp3.x86_64.rpm","unbound-anchor-1.13.2-18.oe2203sp3.x86_64.rpm","unbound-debuginfo-1.13.2-18.oe2203sp3.x86_64.rpm","unbound-debugsource-1.13.2-18.oe2203sp3.x86_64.rpm","unbound-devel-1.13.2-18.oe2203sp3.x86_64.rpm","unbound-help-1.13.2-18.oe2203sp3.x86_64.rpm","unbound-libs-1.13.2-18.oe2203sp3.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2025-1974.json"}},{"package":{"name":"unbound","ecosystem":"openEuler:22.03-LTS-SP4","purl":"pkg:rpm/openEuler/unbound&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13.2-18.oe2203sp4"}]}],"ecosystem_specific":{"x86_64":["python3-unbound-1.13.2-18.oe2203sp4.x86_64.rpm","unbound-1.13.2-18.oe2203sp4.x86_64.rpm","unbound-anchor-1.13.2-18.oe2203sp4.x86_64.rpm","unbound-debuginfo-1.13.2-18.oe2203sp4.x86_64.rpm","unbound-debugsource-1.13.2-18.oe2203sp4.x86_64.rpm","unbound-devel-1.13.2-18.oe2203sp4.x86_64.rpm","unbound-help-1.13.2-18.oe2203sp4.x86_64.rpm","unbound-libs-1.13.2-18.oe2203sp4.x86_64.rpm"],"aarch64":["python3-unbound-1.13.2-18.oe2203sp4.aarch64.rpm","unbound-1.13.2-18.oe2203sp4.aarch64.rpm","unbound-anchor-1.13.2-18.oe2203sp4.aarch64.rpm","unbound-debuginfo-1.13.2-18.oe2203sp4.aarch64.rpm","unbound-debugsource-1.13.2-18.oe2203sp4.aarch64.rpm","unbound-devel-1.13.2-18.oe2203sp4.aarch64.rpm","unbound-help-1.13.2-18.oe2203sp4.aarch64.rpm","unbound-libs-1.13.2-18.oe2203sp4.aarch64.rpm"],"src":["unbound-1.13.2-18.oe2203sp4.src.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2025-1974.json"}},{"package":{"name":"unbound","ecosystem":"openEuler:24.03-LTS","purl":"pkg:rpm/openEuler/unbound&distro=openEuler-24.03-LTS"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.1-12.oe2403sp2"}]}],"ecosystem_specific":{"aarch64":["python3-unbound-1.17.1-12.oe2403.aarch64.rpm","unbound-1.17.1-12.oe2403.aarch64.rpm","unbound-anchor-1.17.1-12.oe2403.aarch64.rpm","unbound-debuginfo-1.17.1-12.oe2403.aarch64.rpm","unbound-debugsource-1.17.1-12.oe2403.aarch64.rpm","unbound-devel-1.17.1-12.oe2403.aarch64.rpm","unbound-help-1.17.1-12.oe2403.aarch64.rpm","unbound-libs-1.17.1-12.oe2403.aarch64.rpm","unbound-utils-1.17.1-12.oe2403.aarch64.rpm","python3-unbound-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-anchor-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-debuginfo-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-debugsource-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-devel-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-help-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-libs-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-utils-1.17.1-12.oe2403sp1.aarch64.rpm","python3-unbound-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-anchor-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-debuginfo-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-debugsource-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-devel-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-help-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-libs-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-utils-1.17.1-12.oe2403sp2.aarch64.rpm"],"src":["unbound-1.17.1-12.oe2403.src.rpm","unbound-1.17.1-12.oe2403sp1.src.rpm","unbound-1.17.1-12.oe2403sp2.src.rpm"],"x86_64":["python3-unbound-1.17.1-12.oe2403.x86_64.rpm","unbound-1.17.1-12.oe2403.x86_64.rpm","unbound-anchor-1.17.1-12.oe2403.x86_64.rpm","unbound-debuginfo-1.17.1-12.oe2403.x86_64.rpm","unbound-debugsource-1.17.1-12.oe2403.x86_64.rpm","unbound-devel-1.17.1-12.oe2403.x86_64.rpm","unbound-help-1.17.1-12.oe2403.x86_64.rpm","unbound-libs-1.17.1-12.oe2403.x86_64.rpm","unbound-utils-1.17.1-12.oe2403.x86_64.rpm","python3-unbound-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-anchor-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-debuginfo-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-debugsource-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-devel-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-help-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-libs-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-utils-1.17.1-12.oe2403sp1.x86_64.rpm","python3-unbound-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-anchor-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-debuginfo-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-debugsource-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-devel-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-help-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-libs-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-utils-1.17.1-12.oe2403sp2.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2025-1974.json"}},{"package":{"name":"unbound","ecosystem":"openEuler:24.03-LTS-SP1","purl":"pkg:rpm/openEuler/unbound&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.1-12.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["python3-unbound-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-anchor-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-debuginfo-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-debugsource-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-devel-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-help-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-libs-1.17.1-12.oe2403sp1.aarch64.rpm","unbound-utils-1.17.1-12.oe2403sp1.aarch64.rpm"],"src":["unbound-1.17.1-12.oe2403sp1.src.rpm"],"x86_64":["python3-unbound-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-anchor-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-debuginfo-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-debugsource-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-devel-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-help-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-libs-1.17.1-12.oe2403sp1.x86_64.rpm","unbound-utils-1.17.1-12.oe2403sp1.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2025-1974.json"}},{"package":{"name":"unbound","ecosystem":"openEuler:24.03-LTS-SP2","purl":"pkg:rpm/openEuler/unbound&distro=openEuler-24.03-LTS-SP2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.1-12.oe2403sp2"}]}],"ecosystem_specific":{"aarch64":["python3-unbound-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-anchor-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-debuginfo-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-debugsource-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-devel-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-help-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-libs-1.17.1-12.oe2403sp2.aarch64.rpm","unbound-utils-1.17.1-12.oe2403sp2.aarch64.rpm"],"src":["unbound-1.17.1-12.oe2403sp2.src.rpm"],"x86_64":["python3-unbound-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-anchor-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-debuginfo-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-debugsource-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-devel-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-help-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-libs-1.17.1-12.oe2403sp2.x86_64.rpm","unbound-utils-1.17.1-12.oe2403sp2.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2025-1974.json"}},{"package":{"name":"unbound","ecosystem":"openEuler:20.03-LTS-SP4","purl":"pkg:rpm/openEuler/unbound&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.0-18.oe2003sp4"}]}],"ecosystem_specific":{"aarch64":["python3-unbound-1.11.0-18.oe2003sp4.aarch64.rpm","unbound-1.11.0-18.oe2003sp4.aarch64.rpm","unbound-debuginfo-1.11.0-18.oe2003sp4.aarch64.rpm","unbound-debugsource-1.11.0-18.oe2003sp4.aarch64.rpm","unbound-devel-1.11.0-18.oe2003sp4.aarch64.rpm","unbound-help-1.11.0-18.oe2003sp4.aarch64.rpm","unbound-libs-1.11.0-18.oe2003sp4.aarch64.rpm"],"src":["unbound-1.11.0-18.oe2003sp4.src.rpm"],"x86_64":["python3-unbound-1.11.0-18.oe2003sp4.x86_64.rpm","unbound-1.11.0-18.oe2003sp4.x86_64.rpm","unbound-debuginfo-1.11.0-18.oe2003sp4.x86_64.rpm","unbound-debugsource-1.11.0-18.oe2003sp4.x86_64.rpm","unbound-devel-1.11.0-18.oe2003sp4.x86_64.rpm","unbound-help-1.11.0-18.oe2003sp4.x86_64.rpm","unbound-libs-1.11.0-18.oe2003sp4.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2025-1974.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}