CVE-2026-10723: Incorrect acceptance of NSEC3 records

CSIRTS triage

What

Incorrect acceptance of NSEC3 records can lead to vulnerabilities.

Who is affected

Systems utilizing NSEC3 records are affected.

Urgency

Remediation is medium urgency due to the medium severity of the vulnerability.

Action

Update systems to correctly handle NSEC3 records.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

Microsoft Security Response Center (INTL · vendor-psirt · site)

Severity

medium — CVSS 6.8

Published

2026-07-14

Exploitation

Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-10723

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-107230.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• high[NEW] [high] Internet Systems Consortium BIND: Multiple vulnerabilitiescert-bund
• mediumCVE-2026-10723: BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to …nvd
• unknownDSA-6395-1 bind9 - security updatedebian

More from Microsoft Security Response Center

• highCVE-2026-57992: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability2026-07-14
• mediumCVE-2026-59926: Mistune: XSS via unescaped class option in Admonition directive2026-07-14
• mediumCVE-2026-55003: Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability2026-07-14
• highCVE-2026-42900: Microsoft Windows App Store Elevation of Privilege Vulnerability2026-07-14
• unknownCVE-2026-13867: Chromium: CVE-2026-13867 Inappropriate implementation in Geolocation2026-07-14