What is CVE-2026-1519?

CVE-2026-1519 is a high-severity vulnerability in Isc Bind, classified under CWE-606. CVSS score: 7.5/10. Published 2026-03-25.

How severe is CVE-2026-1519?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Isc Bind

CVE-2026-1519

If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative…

EPSS: 0.001 (19.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Isc Bind
Isc Bind 9 — versions 9.11.0, 9.18.0, 9.20.0

Weakness classification (CWE)

CWE-606

References

security-officer@isc.org (vendor-advisory, Vendor Advisory)
security-officer@isc.org (Patch, patch)
security-officer@isc.org (Patch, patch)
security-officer@isc.org (Patch, patch)
af854a3a-2127-422b-91ae-364da2661108 (Issue Tracking, Third Party Advisory)

Frequently asked questions

What is CVE-2026-1519?: CVE-2026-1519 is a high-severity vulnerability in Isc Bind, classified under CWE-606. CVSS score: 7.5/10. Published 2026-03-25.
How severe is CVE-2026-1519?: High severity. CVSS v3 base score is 7.5 out of 10.