Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-97313

ISC BIND Vulnerability in NetApp Products

CVE-2026-97313: 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-2026-97313 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)
Weakness: CWE-617
Fixed releases: Red Hat: bind-main-9.20.30-0.1.hum1, RHSA-2026:87309
Vendor advisories: 2 from NetApp, Red Hat
VulniPulse record: Published Oct 22, 2026 · Updated Oct 30, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-97313; bulletin-wide values are not repeated here.

Is CVE-2026-97313 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-97313 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-2026-97313?

Upgrade to a fixed release named by the vendor:

Red Hat: bind-main-9.20.30-0.1.hum1, RHSA-2026:87309

Ensure all Response Policy Zones (RPZ) configured in `/etc/named.conf` use identical `recursive-only` settings. For example, ensure all RPZ definitions consistently specify `recursive-only yes;` or `recursive-only no;`, eliminating conflicting policies. Alternatively, limit recursive query privileges strictly to authorized clients by configuring the `allow-recursion` option with an access control list (ACL). After modifying the configuration, validate the syntax and reload the service: ``` named-checkconf systemctl reload named ``` Caveats: Aligning the `recursive-only` setting across RPZ zones may alter policy enforcement behavior for non-recursive queries. Restricting recursion prevents unauthorized networks from performing recursive lookups. Warning: Reloading or restarting the `named` service may cause a momentary pause in active DNS query processing. (Red Hat)

Vendor advisory comparison

NetApp

1 advisory

Advisory severityHigh7.5
High [CVE-2026-97313] ISC BIND Vulnerability in NetApp Products
NTAP-20261030-0018Source published Oct 30, 2026Source updated Oct 30, 2026
ISC BIND versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.29 and 9.21.0 through 9.21.26 are susceptible to a vulnerability which when successfully exploited could resulting in a 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
9.16.0
9.18.50
9.20.0
9.20.29
2 more entries in the full advisory.
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-2026-97313] Denial of service via assertion failure in RPZ query processing
CVE-2026-97313Source published Oct 21, 2026Source updated Oct 21, 2026
Denial of service via assertion failure in RPZ query processing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-617. Red Hat lists fixing advisory RHSA-2026:87309 with package bind-main-9.20.30-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 6 more.
Related products — impact not confirmed
Red Hat Hardened Images
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
6 more entries in the full advisory.
Source-reported affected versions
Affected-version details not available in this record.
Source-reported fixed versions
bind-main-9.20.30-0.1.hum1
RHSA-2026:87309
Mitigation guidance
Ensure all Response Policy Zones (RPZ) configured in `/etc/named.conf` use identical `recursive-only` settings. For example, ensure all RPZ definitions consistently specify `recursive-only yes;` or `recursive-only no;`, eliminating conflicting policies. Alternatively, limit recursive query privileges strictly to authorized clients by configuring the `allow-recursion` option with an access control list (ACL). After modifying the configuration, validate the syntax and reload the service: ``` named-checkconf systemctl reload named ``` Caveats: Aligning the `recursive-only` setting across RPZ zones may alter policy enforcement behavior for non-recursive queries. Restricting recursion prevents unauthorized networks from performing recursive lookups. Warning: Reloading or restarting the `named` service may cause a momentary pause in active DNS query processing.
Full advisory and evidence Open source bulletin

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