16 results · Clear filters · Feed
-
High 8.1CVE-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…
-
Medium 5.3CVE-2026-5950 Public exploit
Unbounded resend loop in BIND 9 resolver
An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions. This issue…
-
High 8.6CVE-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 …
-
High 7.5
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…
-
High 7.5CVE-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…
-
High 7.5
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote att…
-
High 7.5
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to …
-
High 7.5
A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c
Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key…
-
High 7.5
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…
-
High 7.5
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…
-
Unscored —
buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x before 9.11.0rc3 does not properly…
-
High 7.5
named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service …
KEV Oct 8, 2026 -
Unscored —
The dns_db_findrdataset function in db.c in named in ISC BIND 9.4 before 9.4.3-P3, 9.5 before 9.5.1-P3, and 9.6 before …
-
Unscored —
The DNS protocol, as implemented in (1) BIND 8 and 9 before 9.5.0-P1, 9.4.2-P1, and 9.3.5-P1; (2) Microsoft DNS in Wind…
-
Unscored —
ISC BIND 9 through 9.5.0a5 uses a weak random number generator during generation of DNS query ids when answering resolv…
-
Unscored —
The default configuration of ISC BIND before 9.4.1-P1, when configured as a caching name server, allows recursive queri…