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
Recommended remediation
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. CISA due date Oct 11, 2026.
Official advisories
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.
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.
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
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.
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
- Mitigation · kb.juniper.net
- Mailing List · lists.fedoraproject.org
- Mailing List · lists.fedoraproject.org
- Mailing List · lists.fedoraproject.org
- Mailing List · lists.opensuse.org
- Mailing List · lists.opensuse.org
- CISA note · access.redhat.com
- VulnCheck exploitation evidence · blog.sucuri.net
- Patch · kb.isc.org
- CISA note · nvd.nist.gov
- CISA note · supportportal.juniper.net
- CISA note · web.archive.org
- VulnCheck exploitation evidence · cisa.gov
- CISA note · cisa.gov
- CISA note · cisa.gov
- VulnCheck exploitation evidence · cisa.gov
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.