CVE-2015-5477
CVSS v3
7.5
HIGH
EPSS Score
91.8 %
exploit probability, as of 2026-10-09
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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.
CISA Known Exploited Vulnerability
- Date Added
- 2026-10-08
- Patch Due Date
- 2026-10-11
- Ransomware Use
- Unknown
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2015-07-28
- Last Modified
- 2026-10-09
Frequently asked questions
What is CVE-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.
Is CVE-2015-5477 actively exploited?
Yes. CVE-2015-5477 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-10-11.
What is the CVSS score for CVE-2015-5477?
CVE-2015-5477 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
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