Input validation error in ISC BIND - CVE-2026-10822
Published: July 23, 2026
Vulnerability identifier: #VU139213
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-10822
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ISC
Affected software:
ISC BIND
ISC BIND
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in DNS record text rendering when processing a stored DNS record with a PRIVATEDNS algorithm identifier length longer than the actual identifier data. A remote attacker can supply a specially crafted DNS record to cause a denial of service.
User interaction is required for BIND to later render the stored record to text.
How to mitigate CVE-2026-10822
Install security update from vendor's website.