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108 vulnerabilities found for BIND 9 by ISC
CVE-2026-3591 (GCVE-0-2026-3591)
Vulnerability from nvd – Published: 2026-03-25 13:34 – Updated: 2026-03-25 14:13
VLAI?
Title
A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass
Summary
A use-after-return vulnerability exists in the `named` server when handling DNS queries signed with SIG(0). Using a specially-crafted DNS request, an attacker may be able to cause an ACL to improperly (mis)match an IP address. In a default-allow ACL (denying only specific IP addresses), this may lead to unauthorized access. Default-deny ACLs should fail-secure.
This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.
BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity ?
5.4 (Medium)
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2026-03-25 00:00
Credits
ISC would like to thank Mcsky23 for bringing this vulnerability to our attention.
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CVE-2026-3119 (GCVE-0-2026-3119)
Vulnerability from nvd – Published: 2026-03-25 13:31 – Updated: 2026-03-25 14:13
VLAI?
Title
Authenticated query containing a TKEY record may cause named to terminate unexpectedly
Summary
Under certain conditions, `named` may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature (TSIG) from a key declared in the `named` configuration.
This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.
BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity ?
6.5 (Medium)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2026-03-25 00:00
Credits
ISC would like to thank Vitaly Simonovich for bringing this vulnerability to our attention.
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CVE-2026-3104 (GCVE-0-2026-3104)
Vulnerability from nvd – Published: 2026-03-25 13:29 – Updated: 2026-03-25 14:56
VLAI?
Title
Memory leak in code preparing DNSSEC proofs of non-existence
Summary
A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain.
This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.
BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity ?
7.5 (High)
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2026-03-25 00:00
Credits
ISC would like to thank Vitaly Simonovich for bringing this vulnerability to our attention.
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CVE-2026-1519 (GCVE-0-2026-1519)
Vulnerability from nvd – Published: 2026-03-25 13:25 – Updated: 2026-03-25 14:55
VLAI?
Title
Excessive NSEC3 iterations cause high CPU load during insecure delegation validation
Summary
If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries).
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.
Severity ?
7.5 (High)
CWE
- CWE-606 - Unchecked Input for Loop Condition
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.46 (custom) Affected: 9.20.0 , ≤ 9.20.20 (custom) Affected: 9.21.0 , ≤ 9.21.19 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.46-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.20-S1 (custom) |
Date Public ?
2026-03-25 00:00
Credits
ISC would like to thank Samy Medjahed/Ap4sh for bringing this vulnerability to our attention.
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CVE-2025-13878 (GCVE-0-2025-13878)
Vulnerability from nvd – Published: 2026-01-21 14:43 – Updated: 2026-01-21 18:13
VLAI?
Title
Malformed BRID/HHIT records can cause named to terminate unexpectedly
Summary
Malformed BRID/HHIT records can cause `named` to terminate unexpectedly.
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Severity ?
7.5 (High)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2026-01-21 00:00
Credits
ISC would like to thank Vlatko Kosturjak from Marlink Cyber for bringing this vulnerability to our attention.
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CVE-2025-8677 (GCVE-0-2025-8677)
Vulnerability from nvd – Published: 2025-10-22 15:43 – Updated: 2025-11-04 21:15
VLAI?
Title
Resource exhaustion via malformed DNSKEY handling
Summary
Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.
This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity ?
7.5 (High)
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-10-22 00:00
Credits
ISC would like to thank Zuyao Xu and Xiang Li from the All-in-One Security and Privacy Laboratory at Nankai University for bringing this vulnerability to our attention.
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CVE-2025-40780 (GCVE-0-2025-40780)
Vulnerability from nvd – Published: 2025-10-22 15:48 – Updated: 2025-11-04 21:10
VLAI?
Title
Cache poisoning due to weak PRNG
Summary
In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use.
This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity ?
8.6 (High)
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.16.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.39 (custom) Affected: 9.20.0 , ≤ 9.20.13 (custom) Affected: 9.21.0 , ≤ 9.21.12 (custom) Affected: 9.16.8-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.39-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.13-S1 (custom) |
Date Public ?
2025-10-22 00:00
Credits
ISC would like to thank Prof. Amit Klein and Omer Ben Simhon from Hebrew University of Jerusalem for bringing this vulnerability to our attention.
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CVE-2025-40778 (GCVE-0-2025-40778)
Vulnerability from nvd – Published: 2025-10-22 15:47 – Updated: 2026-02-26 16:57
VLAI?
Title
Cache poisoning attacks with unsolicited RRs
Summary
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 through 9.21.12, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity ?
8.6 (High)
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
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Date Public ?
2025-10-22 00:00
Credits
ISC would like to thank Yuxiao Wu, Yunyi Zhang, Baojun Liu, and Haixin Duan from Tsinghua University for bringing this vulnerability to our attention.
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CVE-2025-40777 (GCVE-0-2025-40777)
Vulnerability from nvd – Published: 2025-07-16 17:38 – Updated: 2025-11-04 21:10
VLAI?
Title
A possible assertion failure when 'stale-answer-client-timeout' is set to '0'
Summary
If a `named` caching resolver is configured with `serve-stale-enable` `yes`, and with `stale-answer-client-timeout` set to `0` (the only allowable value other than `disabled`), and if the resolver, in the process of resolving a query, encounters a CNAME chain involving a specific combination of cached or authoritative records, the daemon will abort with an assertion failure.
This issue affects BIND 9 versions 9.20.0 through 9.20.10, 9.21.0 through 9.21.9, and 9.20.9-S1 through 9.20.10-S1.
Severity ?
7.5 (High)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-07-16 00:00
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CVE-2025-40776 (GCVE-0-2025-40776)
Vulnerability from nvd – Published: 2025-07-16 13:41 – Updated: 2025-07-22 14:55
VLAI?
Title
Birthday Attack against Resolvers supporting ECS
Summary
A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a cache-poisoning attack.
This issue affects BIND 9 versions 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.37-S1, and 9.20.9-S1 through 9.20.10-S1.
Severity ?
8.6 (High)
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-07-16 00:00
Credits
ISC would like to thank Xiang Li from AOSP Lab of Nankai University for bringing this vulnerability to our attention.
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CVE-2025-40775 (GCVE-0-2025-40775)
Vulnerability from nvd – Published: 2025-05-21 12:35 – Updated: 2025-05-23 13:11
VLAI?
Title
DNS message with invalid TSIG causes an assertion failure
Summary
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 through 9.20.8 and 9.21.0 through 9.21.7.
Severity ?
7.5 (High)
CWE
- CWE-232 - Improper Handling of Undefined Values
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-05-21 00:00
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CVE-2024-12705 (GCVE-0-2024-12705)
Vulnerability from nvd – Published: 2025-01-29 21:40 – Updated: 2025-02-07 17:02
VLAI?
Title
DNS-over-HTTPS implementation suffers from multiple issues under heavy query load
Summary
Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic.
This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1.
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-01-29 00:00
Credits
ISC would like to thank Jean-François Billaud for bringing this vulnerability to our attention.
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CVE-2024-11187 (GCVE-0-2024-11187)
Vulnerability from nvd – Published: 2025-01-29 21:40 – Updated: 2025-02-11 19:02
VLAI?
Title
Many records in the additional section cause CPU exhaustion
Summary
It is possible to construct a zone such that some queries to it will generate responses containing numerous records in the Additional section. An attacker sending many such queries can cause either the authoritative server itself or an independent resolver to use disproportionate resources processing the queries. Zones will usually need to have been deliberately crafted to attack this exposure.
This issue affects BIND 9 versions 9.11.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, 9.11.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.32-S1.
Severity ?
7.5 (High)
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.11.37
(custom)
Affected: 9.16.0 , ≤ 9.16.50 (custom) Affected: 9.18.0 , ≤ 9.18.32 (custom) Affected: 9.20.0 , ≤ 9.20.4 (custom) Affected: 9.21.0 , ≤ 9.21.3 (custom) Affected: 9.11.3-S1 , ≤ 9.11.37-S1 (custom) Affected: 9.16.8-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.32-S1 (custom) |
Date Public ?
2025-01-29 00:00
Credits
ISC would like to thank Toshifumi Sakaguchi for bringing this vulnerability to our attention.
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CVE-2024-4076 (GCVE-0-2024-4076)
Vulnerability from nvd – Published: 2024-07-23 14:40 – Updated: 2025-02-13 17:53
VLAI?
Title
Assertion failure when serving both stale cache data and authoritative zone content
Summary
Client queries that trigger serving stale data and that also require lookups in local authoritative zone data may result in an assertion failure.
This issue affects BIND 9 versions 9.16.13 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.11.33-S1 through 9.11.37-S1, 9.16.13-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.27-S1.
Severity ?
7.5 (High)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
Impacted products
Date Public ?
2024-07-23 00:00
Credits
ISC would like to thank Daniel Stränger for bringing this vulnerability to our attention.
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CVE-2024-1975 (GCVE-0-2024-1975)
Vulnerability from nvd – Published: 2024-07-23 14:38 – Updated: 2025-02-13 17:32
VLAI?
Title
SIG(0) can be used to exhaust CPU resources
Summary
If a server hosts a zone containing a "KEY" Resource Record, or a resolver DNSSEC-validates a "KEY" Resource Record from a DNSSEC-signed domain in cache, a client can exhaust resolver CPU resources by sending a stream of SIG(0) signed requests.
This issue affects BIND 9 versions 9.0.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.49-S1, and 9.18.11-S1 through 9.18.27-S1.
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.0.0 , ≤ 9.11.37
(custom)
Affected: 9.16.0 , ≤ 9.16.50 (custom) Affected: 9.18.0 , ≤ 9.18.27 (custom) Affected: 9.19.0 , ≤ 9.19.24 (custom) Affected: 9.9.3-S1 , ≤ 9.11.37-S1 (custom) Affected: 9.16.8-S1 , ≤ 9.16.49-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.27-S1 (custom) |
Date Public ?
2024-07-23 00:00
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CVE-2024-1737 (GCVE-0-2024-1737)
Vulnerability from nvd – Published: 2024-07-23 14:34 – Updated: 2025-02-13 17:32
VLAI?
Title
BIND's database will be slow if a very large number of RRs exist at the same name
Summary
Resolver caches and authoritative zone databases that hold significant numbers of RRs for the same hostname (of any RTYPE) can suffer from degraded performance as content is being added or updated, and also when handling client queries for this name.
This issue affects BIND 9 versions 9.11.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.11.4-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.27-S1.
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.11.37
(custom)
Affected: 9.16.0 , ≤ 9.16.50 (custom) Affected: 9.18.0 , ≤ 9.18.27 (custom) Affected: 9.19.0 , ≤ 9.19.24 (custom) Affected: 9.11.4-S1 , ≤ 9.11.37-S1 (custom) Affected: 9.16.8-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.27-S1 (custom) |
Date Public ?
2024-07-23 00:00
Credits
ISC would like to thank Toshifumi Sakaguchi for bringing this vulnerability to our attention.
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CVE-2024-0760 (GCVE-0-2024-0760)
Vulnerability from nvd – Published: 2024-07-23 14:26 – Updated: 2025-02-13 17:27
VLAI?
Title
A flood of DNS messages over TCP may make the server unstable
Summary
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 versions 9.18.1 through 9.18.27, 9.19.0 through 9.19.24, and 9.18.11-S1 through 9.18.27-S1.
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Date Public ?
2024-07-23 00:00
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CVE-2026-3591 (GCVE-0-2026-3591)
Vulnerability from cvelistv5 – Published: 2026-03-25 13:34 – Updated: 2026-03-25 14:13
VLAI?
Title
A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass
Summary
A use-after-return vulnerability exists in the `named` server when handling DNS queries signed with SIG(0). Using a specially-crafted DNS request, an attacker may be able to cause an ACL to improperly (mis)match an IP address. In a default-allow ACL (denying only specific IP addresses), this may lead to unauthorized access. Default-deny ACLs should fail-secure.
This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.
BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity ?
5.4 (Medium)
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2026-03-25 00:00
Credits
ISC would like to thank Mcsky23 for bringing this vulnerability to our attention.
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CVE-2026-3119 (GCVE-0-2026-3119)
Vulnerability from cvelistv5 – Published: 2026-03-25 13:31 – Updated: 2026-03-25 14:13
VLAI?
Title
Authenticated query containing a TKEY record may cause named to terminate unexpectedly
Summary
Under certain conditions, `named` may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature (TSIG) from a key declared in the `named` configuration.
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BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity ?
6.5 (Medium)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2026-03-25 00:00
Credits
ISC would like to thank Vitaly Simonovich for bringing this vulnerability to our attention.
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CVE-2026-3104 (GCVE-0-2026-3104)
Vulnerability from cvelistv5 – Published: 2026-03-25 13:29 – Updated: 2026-03-25 14:56
VLAI?
Title
Memory leak in code preparing DNSSEC proofs of non-existence
Summary
A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain.
This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.
BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity ?
7.5 (High)
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2026-03-25 00:00
Credits
ISC would like to thank Vitaly Simonovich for bringing this vulnerability to our attention.
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CVE-2026-1519 (GCVE-0-2026-1519)
Vulnerability from cvelistv5 – Published: 2026-03-25 13:25 – Updated: 2026-03-25 14:55
VLAI?
Title
Excessive NSEC3 iterations cause high CPU load during insecure delegation validation
Summary
If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries).
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Severity ?
7.5 (High)
CWE
- CWE-606 - Unchecked Input for Loop Condition
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.46 (custom) Affected: 9.20.0 , ≤ 9.20.20 (custom) Affected: 9.21.0 , ≤ 9.21.19 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.46-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.20-S1 (custom) |
Date Public ?
2026-03-25 00:00
Credits
ISC would like to thank Samy Medjahed/Ap4sh for bringing this vulnerability to our attention.
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CVE-2025-13878 (GCVE-0-2025-13878)
Vulnerability from cvelistv5 – Published: 2026-01-21 14:43 – Updated: 2026-01-21 18:13
VLAI?
Title
Malformed BRID/HHIT records can cause named to terminate unexpectedly
Summary
Malformed BRID/HHIT records can cause `named` to terminate unexpectedly.
This issue affects BIND 9 versions 9.18.40 through 9.18.43, 9.20.13 through 9.20.17, 9.21.12 through 9.21.16, 9.18.40-S1 through 9.18.43-S1, and 9.20.13-S1 through 9.20.17-S1.
Severity ?
7.5 (High)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2026-01-21 00:00
Credits
ISC would like to thank Vlatko Kosturjak from Marlink Cyber for bringing this vulnerability to our attention.
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CVE-2025-40780 (GCVE-0-2025-40780)
Vulnerability from cvelistv5 – Published: 2025-10-22 15:48 – Updated: 2025-11-04 21:10
VLAI?
Title
Cache poisoning due to weak PRNG
Summary
In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use.
This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity ?
8.6 (High)
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.16.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.39 (custom) Affected: 9.20.0 , ≤ 9.20.13 (custom) Affected: 9.21.0 , ≤ 9.21.12 (custom) Affected: 9.16.8-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.39-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.13-S1 (custom) |
Date Public ?
2025-10-22 00:00
Credits
ISC would like to thank Prof. Amit Klein and Omer Ben Simhon from Hebrew University of Jerusalem for bringing this vulnerability to our attention.
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CVE-2025-40778 (GCVE-0-2025-40778)
Vulnerability from cvelistv5 – Published: 2025-10-22 15:47 – Updated: 2026-02-26 16:57
VLAI?
Title
Cache poisoning attacks with unsolicited RRs
Summary
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 through 9.21.12, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity ?
8.6 (High)
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
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Date Public ?
2025-10-22 00:00
Credits
ISC would like to thank Yuxiao Wu, Yunyi Zhang, Baojun Liu, and Haixin Duan from Tsinghua University for bringing this vulnerability to our attention.
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CVE-2025-8677 (GCVE-0-2025-8677)
Vulnerability from cvelistv5 – Published: 2025-10-22 15:43 – Updated: 2025-11-04 21:15
VLAI?
Title
Resource exhaustion via malformed DNSKEY handling
Summary
Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.
This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity ?
7.5 (High)
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-10-22 00:00
Credits
ISC would like to thank Zuyao Xu and Xiang Li from the All-in-One Security and Privacy Laboratory at Nankai University for bringing this vulnerability to our attention.
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CVE-2025-40777 (GCVE-0-2025-40777)
Vulnerability from cvelistv5 – Published: 2025-07-16 17:38 – Updated: 2025-11-04 21:10
VLAI?
Title
A possible assertion failure when 'stale-answer-client-timeout' is set to '0'
Summary
If a `named` caching resolver is configured with `serve-stale-enable` `yes`, and with `stale-answer-client-timeout` set to `0` (the only allowable value other than `disabled`), and if the resolver, in the process of resolving a query, encounters a CNAME chain involving a specific combination of cached or authoritative records, the daemon will abort with an assertion failure.
This issue affects BIND 9 versions 9.20.0 through 9.20.10, 9.21.0 through 9.21.9, and 9.20.9-S1 through 9.20.10-S1.
Severity ?
7.5 (High)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-07-16 00:00
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CVE-2025-40776 (GCVE-0-2025-40776)
Vulnerability from cvelistv5 – Published: 2025-07-16 13:41 – Updated: 2025-07-22 14:55
VLAI?
Title
Birthday Attack against Resolvers supporting ECS
Summary
A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a cache-poisoning attack.
This issue affects BIND 9 versions 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.37-S1, and 9.20.9-S1 through 9.20.10-S1.
Severity ?
8.6 (High)
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-07-16 00:00
Credits
ISC would like to thank Xiang Li from AOSP Lab of Nankai University for bringing this vulnerability to our attention.
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CVE-2025-40775 (GCVE-0-2025-40775)
Vulnerability from cvelistv5 – Published: 2025-05-21 12:35 – Updated: 2025-05-23 13:11
VLAI?
Title
DNS message with invalid TSIG causes an assertion failure
Summary
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 through 9.20.8 and 9.21.0 through 9.21.7.
Severity ?
7.5 (High)
CWE
- CWE-232 - Improper Handling of Undefined Values
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-05-21 00:00
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CVE-2024-12705 (GCVE-0-2024-12705)
Vulnerability from cvelistv5 – Published: 2025-01-29 21:40 – Updated: 2025-02-07 17:02
VLAI?
Title
DNS-over-HTTPS implementation suffers from multiple issues under heavy query load
Summary
Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic.
This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1.
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Date Public ?
2025-01-29 00:00
Credits
ISC would like to thank Jean-François Billaud for bringing this vulnerability to our attention.
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CVE-2024-11187 (GCVE-0-2024-11187)
Vulnerability from cvelistv5 – Published: 2025-01-29 21:40 – Updated: 2025-02-11 19:02
VLAI?
Title
Many records in the additional section cause CPU exhaustion
Summary
It is possible to construct a zone such that some queries to it will generate responses containing numerous records in the Additional section. An attacker sending many such queries can cause either the authoritative server itself or an independent resolver to use disproportionate resources processing the queries. Zones will usually need to have been deliberately crafted to attack this exposure.
This issue affects BIND 9 versions 9.11.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, 9.11.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.32-S1.
Severity ?
7.5 (High)
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.11.37
(custom)
Affected: 9.16.0 , ≤ 9.16.50 (custom) Affected: 9.18.0 , ≤ 9.18.32 (custom) Affected: 9.20.0 , ≤ 9.20.4 (custom) Affected: 9.21.0 , ≤ 9.21.3 (custom) Affected: 9.11.3-S1 , ≤ 9.11.37-S1 (custom) Affected: 9.16.8-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.32-S1 (custom) |
Date Public ?
2025-01-29 00:00
Credits
ISC would like to thank Toshifumi Sakaguchi for bringing this vulnerability to our attention.
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