AUGUST 4, 2026
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Case File

CVE-2023-4236

HIGH · CVSS 7.5 EPSS 2.17%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-09-20 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2023-4236
Severity
HIGH
CVSS
7.5
EPSS
2.17%

Original NVD Description

A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load. This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.

Related CVEs

Other vulnerabilities affecting the same vendor(s)