How severe is CVE-2019-6465?

CVE-2019-6465 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2019-6465 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6465?

CVE-2019-6465 primarily affects Isc Bind. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6465?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-6465 published?

CVE-2019-6465 was published on 2019-10-09 and last updated on 2026-06-17.

CVE-2019-6465

CVE-2019-6465 is a medium-severity vulnerability in Isc Bind with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.3
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Isc Bind
Published: 2019-10-09
Last modified: 2026-06-17

Description

Controls for zone transfers may not be properly applied to Dynamically Loadable Zones (DLZs) if the zones are writable Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P2, 9.12.0 -> 9.12.3-P2, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2019-6465.

Frequently asked questions

What is CVE-2019-6465?: Controls for zone transfers may not be properly applied to Dynamically Loadable Zones (DLZs) if the zones are writable Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P2, 9.12.0 -> 9.12.3-P2, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2019-6465.
How severe is CVE-2019-6465?: CVE-2019-6465 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2019-6465 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6465?: CVE-2019-6465 primarily affects Isc Bind. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6465?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-6465 published?: CVE-2019-6465 was published on 2019-10-09 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.9.3:s1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.8:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.8:p1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.11.5:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.11.5:p1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.11.5:p2:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:*
cpe:2.3:a:isc:bind:9.12.3:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.12.3:p1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.12.3:p2:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

More vulnerabilities in Isc Bind

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CVE-2001-0010 — Critical (CVSS 10.0): Buffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.
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