BaseFortify

Publication date: 2026-09-16

Last updated on: 2026-09-17

Assigner: Internet Systems Consortium (ISC)

Description

If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in `named` results in a negative cache entry of 0 bytes. When this entry is subsequently read, `named` aborts. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-16

Last Modified

2026-09-17

Generated

2026-09-20

EPSS Evaluated

N/A

NVD

CVE-2026-19667

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-197	Truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion.

Attack-Flow Graph

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