ISC · BIND

CVE-2015-5477

ISC BIND Data Processing Errors Vulnerability

Exploited in attacks High 7.5 Attack chance: 99.6%

What it is

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

What to do

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.

Deadline for US federal agencies: October 11, 2026

Added to the CISA list: October 8, 2026
Published: July 29, 2015
Severity: High 7.5 CVSS 3.1
Chance of attacks in the next 30 days (EPSS): 99.6% in the top 0.1% of all known vulnerabilities
Weakness: CWE-19
More details: NVD · CVE.org · CISA

All references (20)

Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.