BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to...
Summary
Vulnerability reported (CVE-2026-10723). Data can be tampered with by attackers.
Original description
The description as published by the source.
BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN responses.
This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-10723 has been found.
Data can be tampered with by attackers. CVSS score: 6.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "CVE-2026-10723" on the vendor's site.
CVE-2026-10723 — CWE-347 / CVSS v3 6.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-347) has been reported.
Check the vendor advisory for the affected versions.
Severity: Medium (CVSS 6.8/10). Data can be tampered with by attackers.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで影響コンポーネントを特定する。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2026-10723 bind Fixed in: 9.20.26-r0
- BellSoft Alpaquita BELL-CVE-2026-10723 bind Fixed in: 9.20.26-r0
- Debian DEBIAN-CVE-2026-10723 bind9 Fixed in: 1:9.18.49-1~deb12u2
References
- JVN JVNDB-2026-024975
- web nvd.nist.gov
- web security-officer@isc.org
- web security-officer@isc.org
- web security-officer@isc.org
- web github.com