7.5 CVE-2026-1519

Enriched by CISA
 

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.
https://nvd.nist.gov/vuln/detail/CVE-2026-1519

Categories

CWE-606 : Unchecked Input for Loop Condition
The product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping. Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.) Do not use user-controlled data for loop conditions. Perform input validation.

References


 

AFFECTED (from MITRE)

Vendor Product Versions
ISC BIND 9
  • 9.11.0 ≤ 9.16.50 [affected]
  • 9.18.0 ≤ 9.18.46 [affected]
  • 9.20.0 ≤ 9.20.20 [affected]
  • 9.21.0 ≤ 9.21.19 [affected]
  • 9.11.3-S1 ≤ 9.16.50-S1 [affected]
  • 9.18.11-S1 ≤ 9.18.46-S1 [affected]
  • 9.20.9-S1 ≤ 9.20.20-S1 [affected]
© 2022 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.

CPE

cpe start end
Configuration 1
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* >= 9.11.0 <= 9.16.50
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* >= 9.18.0 <= 9.18.46
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* >= 9.20.0 <= 9.20.20
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* >= 9.21.0 <= 9.21.19
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* >= 9.11.3-S1 <= 9.16.50-S1
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* >= 9.18.11-S1 <= 9.18.46-S1
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* >= 9.20.9-S1 <= 9.20.20-S1

REMEDIATION


EXPLOITS

Exploit-db.com

id description date
No known exploits

POC Github

Url
No known exploits

Other Nist (github, ...)

Url
No known exploits

CAPEC

Common Attack Pattern Enumerations and Classifications

id description severity
No entry