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Product · ISC

BIND 9

87 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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  • High 8.1
    CVE-2026-94300 Public exploit

    Concurrent GSS-TSIG messages corrupt memory

    Replaying GSS-TSIG signed UDP messages can result in memory corruption in "`named`". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Alpine
  • High 8.6
    CVE-2025-40778 Public exploit

    Cache poisoning attacks with unsolicited RRs

    Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject forged data into the cache. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 …

    ISC BIND 9 bind9 bind9 Debian Ubuntu Alpine
  • High 7.5
    CVE-2025-40775 Public exploit EPSS 15%

    DNS message with invalid TSIG causes an assertion failure

    When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an assertion failure. This issue affects BIND 9 versions 9.20.0 th…

    ISC BIND 9 bind9 bind Debian Alpine
  • High 7.5
    CVE-2024-0760 Public exploit

    A flood of DNS messages over TCP may make the server unstable

    A malicious client can send many DNS messages over TCP, potentially causing the server to become unstable while the attack is in progress. The server may recover after the attack ceases. Use of ACLs will not mitigate the attack. This issue affects BIND 9 vers…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Alpine
  • High 7.5
    CVE-2018-5740 Public exploit EPSS 60%

    A flaw in the "deny-answer-aliases" feature can cause an assertion failure in named

    "deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Alpine
  • High 7.5
    CVE-2017-3143 Public exploit EPSS 18%

    An error in TSIG authentication can permit unauthorized dynamic updates

    An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name for the zone and service being targeted may be able to manipulate BIND into accepting an unauthorized dynamic update. Affects BI…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Alpine
  • High 7.2
    CVE-2017-3141 Public exploit

    Windows service and uninstall paths are not quoted when BIND is installed

    The BIND installer on Windows uses an unquoted service path which can enable a local user to achieve privilege escalation if the host file system permissions allow this. Affects BIND 9.2.6-P2->9.2.9, 9.3.2-P1->9.3.6, 9.4.0->9.8.8, 9.9.0->9.9.10, 9.10.0->9.10.…

    ISC BIND 9 bind Alpine