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CVE-2015-5477

ISC BIND Data Processing Errors

7.5 HIGHActively exploited (CISA KEV)Public exploitEPSS 99.4%
  1. Published29 Jul 2015
  2. Added to CISA KEV8 Oct 2026
  3. Remediation due11 Oct 2026
Actively exploited (CISA KEV)

ISC BIND contains a data processing errors vulnerability that could allow remote attackers to cause a denial of service via TKEY queries.

Added to KEV: 8 Oct 2026Federal remediation due: 11 Oct 2026

Description

named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) via TKEY queries.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

HPE DNS9.2.3 · 9.3
HPE Vcx< 9.8.18
Isc Bind≥ 9.1.0 < 9.9.7 · ≥ 9.10.0 < 9.10.2 · 9.10.2
Netapp Clustered Data Ontapall versions
Oracle Vm Server3.2
Suse Linux Enterprise Debuginfo11
Apple OS X Server4.1.5
Canonical Ubuntu Linux12.04
Debian Linux7.0 · 8.0
Fedoraproject Fedora21 · 22
HP Hp-ux11.11 · 11.23 · 11.31
HP Openvms5.7
Juniper Junos≥ 13.1 < 13.2 · < 12.1 · 12.1 · 12.1r

Remediation

Fixed in
HPE Vcx≥ 9.8.18
Isc Bind≥ 9.9.7
Juniper Junos≥ 13.2
Patch & vendor advisories

References

and 33 more references

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Frequently asked

Is CVE-2015-5477 being actively exploited?

Yes. CVE-2015-5477 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 8 Oct 2026.

How severe is CVE-2015-5477?

CVE-2015-5477 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 99.4% probability of exploitation.

Which products are affected by CVE-2015-5477?

Affected products include HPE DNS, HPE Vcx, Isc Bind, Netapp Clustered Data Ontap, Oracle Vm Server, and 8 more.

How do I fix CVE-2015-5477?

Upgrade affected software to a fixed version, for example HPE Vcx 9.8.18, Isc Bind 9.9.7, Juniper Junos 13.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2015-5477 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.