Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-11605

ISC BIND Vulnerability in NetApp Products

CVE-2026-11605: ISC BIND Vulnerability in NetApp Products. Not in the CISA KEV catalog. High advisory severity (CVSS 7.5, NetApp).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-11605 key facts

CISA KEV: Not listed (catalog checked Oct 30, 2026)
Highest advisory severity: High
CVSS base score: 7.5 (NetApp), 7.5 (Red Hat)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (Red Hat)
Weakness: CWE-400
Fixed releases: Red Hat: bind-main-9.18.50-22.hum1, RHSA-2026:42853
Vendor advisories: 2 from NetApp, Red Hat
VulniPulse record: Published Jul 23, 2026 · Updated Aug 28, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-11605; bulletin-wide values are not repeated here.

Is CVE-2026-11605 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-11605 is not in the CISA KEV catalog (checked Oct 30, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-11605?

Upgrade to a fixed release named by the vendor:

Red Hat: bind-main-9.18.50-22.hum1, RHSA-2026:42853

Vendor advisory comparison

NetApp

1 advisory

Advisory severityHigh7.5
High [CVE-2026-11605] ISC BIND Vulnerability in NetApp Products
NTAP-20260730-0009Source published Jul 30, 2026Source updated Aug 28, 2026
ISC BIND versions 9.20.0 through 9.20.24 and 9.21.0 through 9.21.23 are susceptible to a vulnerability which when successfully exploited could lead to Denial of Service (DoS). Successful exploitation of this vulnerability could lead to Denial of Service (DoS). NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.
Affected products in this advisory
No product details extracted. Check the source bulletin.
Source-reported affected versions
9.20.0
9.20.24
9.21.0
9.21.23
Source-reported fixed versions
No fixed-version detail extracted. This does not mean no fix exists.
Mitigation guidance
No mitigation guidance extracted; consult the source.
Full advisory and evidence Open source bulletin

Red Hat

1 advisory

Advisory severityHigh7.5
High [CVE-2026-11605] Unnecessary validation of DNSSEC signed records
CVE-2026-11605Source published Jul 22, 2026Source updated Jul 22, 2026
The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-400. Affected Red Hat products: Red Hat Hardened Images. Under investigation: Red Hat Enterprise Linux 9. Red Hat fixing advisory: RHSA-2026:42853.
Affected products in this advisory
Red Hat Hardened Images
Source-reported affected versions
9.20.0
9.20.24
9.21.0
9.21.23
1 more entries in the full advisory.
Source-reported fixed versions
bind-main-9.18.50-22.hum1
RHSA-2026:42853
Mitigation guidance
No mitigation guidance extracted; consult the source.
Full advisory and evidence Open source bulletin

All NetApp advisories

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