Vulnerabilities

Vulnerability · CVE-2015-5477

ISC BIND Data Processing Errors Vulnerability

Published Jul 29, 2015 · catalog updated Oct 9, 2026 · ISC BIND

Patch now

CVE-2015-5477 is in the CISA known-exploited catalog, due Oct 11, 2026. Confirm ISC BIND against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.5
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
99.41%
Remediation
Remediation guidance
Affected products
cpe debian/debian linux · cpe fedoraproject/fedora · cpe juniper/junos · cpe oracle/vm server · cpe redhat/enterprise linux · vendor ISC BIND

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe debian/debian linux7.0
  • cpe fedoraproject/fedora21
  • cpe juniper/junos12.1
  • cpe juniper/junos12.1r
  • cpe juniper/junos12.1x44
  • cpe oracle/vm server3.2
  • cpe redhat/enterprise linux5.0
  • vendor ISC BINDversion unspecified

How to fix CVE-2015-5477

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2015-5477 is in the CISA known-exploited catalog, due Oct 11, 2026. Confirm ISC BIND against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with debian/debian linux 7.0; oracle/vm server 3.2; redhat/enterprise linux 5.0. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

What should an analyst verify?

CWE-19; CWE-617. EPSS 99.41%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 29, 2015 · Catalog

    Detected

    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.

  2. Oct 8, 2026 · CISA KEV

    Known exploited

    Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating

  3. Oct 9, 2026 · Catalog

    Updated

    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.

  4. Oct 11, 2026 · CISA KEV

    Remediation due

    Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating

Sources

  • CISA Cybersecurity AdvisoriesGovernment advisoryCVE-2015-5477

    Advisory at a Glance Title Chinese Government-linked Cyber Threat Actors Combine Automated and Hands-on Hacking Tools to Steal Sensitive Data <div class="TableCellContent SCXW40

    cisa.gov
  • CISA KEVConfirmed exploitationCVE-2015-5477

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2015-5477

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2015-5477

    30-day exploitation probability 99.4%

    first.org
  • Exploit DatabasePublic exploit reference37721

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference37723

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleauxiliary_dos/dns/bind_tkey

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2015-5477

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2015-5477

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.