CVE-2015-5477

NONECVSS 0.09.0▲Weaponized

0.0

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 v3: —
EG Score: 9.0(low)
EPSS: 99.7%
KEV: Not listed

Published

July 29, 2015

Last Modified

May 6, 2026

References (84)

Patch Availability(6)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	bind9 (1:9.9.5.dfsg-9ubuntu0.2) @ vivid	2026-05-23	ubuntu
redhat	bind-32:9.8.2-0.23.rc1.el6_5.2	2016-01-28	redhat
redhat	bind-32:9.8.2-0.30.rc1.el6_6.4	2016-01-28	redhat
redhat	bind-32:9.9.4-18.ael7b_1.3	2015-07-29	redhat
redhat	bind-30:9.3.6-25.P1.el5_11.3	2015-07-28	redhat
redhat	bind97-32:9.7.0-21.P2.el5_11.2	2015-07-28	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 4× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-07 05:27 UTCOSV refresh
2026-06-05 22:44 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-26 13:41 UTCEPSS rescore
2026-05-26 07:16 UTCEPSS rescore
2026-05-26 07:16 UTCEPSS rescore
2026-05-24 16:43 UTCEPSS rescore
2026-05-23 00:21 UTCEG score recompute
2026-05-23 00:21 UTCVendor advisory
2026-05-23 00:21 UTCGHSA enrichment
2026-05-22 21:15 UTCEPSS rescore

Publicly available exploits

(5 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-37723
First seen Aug 5, 2015
ISC BIND 9 - TKEY Remote Denial of Service (PoC)
Open source ↗
Exploit-DBEDB-37721✓ verified
First seen Aug 1, 2015
ISC BIND 9 - TKEY (PoC)
Open source ↗
GitHub PoCelceef/tkeypoc
First seen Aug 1, 2015
PoC exploit code for CVE-2015-5477 BIND9 TKEY remote DoS vulnerability
Open source ↗
GitHub PoCrobertdavidgraham/cve-2015-5477
First seen Jul 31, 2015
PoC exploit for CVE-2015-5477 BIND9 TKEY assertion failure
Open source ↗
Metasploitauxiliary/dos/dns/bind_tkey✓ verified
First seen Jul 28, 2015
BIND TKEY Query Denial of Service
Open source ↗

Frequently asked(4)

What is CVE-2015-5477?

CVE-2015-5477 is a none vulnerability published on July 29, 2015. 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.

When was CVE-2015-5477 disclosed?

CVE-2015-5477 was first published in the National Vulnerability Database on July 29, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2015-5477 actively exploited?

CVE-2015-5477 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2015-5477?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-5477, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2015-5477

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