Multiple vulnerabilities in BIND9, including DNSSEC validation bypass, RPZ policy bypass, cache poisoning, and denial of service, pose significant risks to DNS server integrity and availability. The CVSS scores for the listed CVEs range from Medium to High, with CVE-2026-11331 scoring 7.5. For Debian stable (trixie), these issues are fixed in BIND9 version 1:9.20.26-1~deb13u1, to which administrators should upgrade immediately.
[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index] [SECURITY] [DSA 6395-1] bind9 security update To: debian-security-announce@lists.debian.org Subject: [SECURITY] [DSA 6395-1] bind9 security update From: Salvatore Bonaccorso <carnil@debian.org> Date: Wed, 22 Jul 2026 21:59:32 +0000 Message-id: <[🔎] E1wmeyS-00000001JIC-396q@seger.debian.org> Reply-to: debian-security-announce-request@lists.debian.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-6395-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso July 22, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : bind9 CVE ID : CVE-2026-10723 CVE-2026-10822 CVE-2026-11331 CVE-2026-11605 CVE-2026-11622 CVE-2026-11721 CVE-2026-12617 CVE-2026-13204 CVE-2026-13321 Several vulnerabilities were discovered in BIND, a DNS server implementation, which may result in bypass of DNSSEC validation, RPZ policy bypass, cache poisoning or denial of service. For the stable distribution (trixie), these problems have been fixed in version 1:9.20.26-1~deb13u1. We recommend that you upgrade your bind9 packages. For the detailed security status of bind9 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/bind9 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAmphPOFfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0Reww/9FszfGJdn3zMWWHs/PLbGGsDW9qgXLJNIkt5Bnsyh89uuUoJcmwGi/FQO CJ6p1rQslnSJyVJQBP+YrNLcaVxxl/xqDfBeRtvBhmlCTymxP66CzGG5IXrbGpTi 0Uhsz8CthgktkxjNgCqgnjRy0aLSWq2LphtLtsY6YsmRgbG01GtKFYluVILI1i9v CBQ3pVfoHDXIzSMrfl/Fbie3gzG6RZogs+W12P0iZMqbqn3iL7ACLJ29UfRDtvYa EungdIplpu/ZpPtST0DXzhWUYwxEgQy9t4CEi+QOlFXF5nDy5wj7bZI3xFkPrwNv m0BFDcCDJC/namCSgE9U3HsrUh4ODARQLp7MUWAoOl5o9QiGsMYB2Y0DLL6opoFR TTdkf2kZUs8kFt0kHhwydHHaEnrYOFpUs9/w//JqDgMU5LIGiI6wHouZabHR3v3Q 2muLtc2cwyj5Y2JoMzXRmKXZYr1RWt9t+MV4d6zy988nuEQbyaL0tf01QMESe9tv mpIhUCfxoKJBBEZcswvOPXk4hLgWlAA/GyfXYRXtRbuV0SHVSJRrkP1O27/I6o2H uwQSJErYnF1iQDezUOt8Ryi8m/u148SzWLVFK1ofOpiyTGaum8lgZPRttSsBj9zo 6Y3fJcZ7FUAfEREyaVN85GmwBhzdltxxGAwHikXTCYqLEdIdBz0= =Pzfy -----END PGP SIGNATURE----- Reply to: debian-security-announce@lists.debian.org Salvatore Bonaccorso (on-list) Salvatore Bonaccorso (off-list) Prev by Date: [SECURITY] [DSA 6394-1] firefox-esr security update Previous by thread: [SECURITY] [DSA 6394-1] firefox-esr security update Index(es): Date Thread