QSearchQSearch

CVE-2026-3104

7.5 HIGH

A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain

Published: 2026-03-25 · Last updated: 2026-05-21

Severity and scoring

CVSS
7.5 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-401, CWE-772

Affected products

VendorProduct
iscbind

Description

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.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-5950 — An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthen... (5.3 MEDIUM)
  • CVE-2026-5947 — Undefined behavior may result due to a race condition leading to a use-after-free violation (7.5 HIGH)
  • CVE-2026-5946 — Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, ... (7.5 HIGH)
  • CVE-2026-3593 — A use-after-free vulnerability exists within the DNS-over-HTTPS implementation (7.4 HIGH)
  • CVE-2026-3592 — BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack (5.3 MEDIUM)

Same CWE

  • CVE-2026-0646 — A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests
  • CVE-2026-48059 — Netty is a network application framework for development of protocol servers and clients (7.5 HIGH)
  • CVE-2026-48043 — Netty is a network application framework for development of protocol servers and clients (5.3 MEDIUM)
  • CVE-2026-48006 — Netty is a network application framework for development of protocol servers and clients (7.5 HIGH)
  • CVE-2026-45536 — Netty is a network application framework for development of protocol servers and clients (4.0 MEDIUM)