ISC BIND Data Processing Errors Vulnerability
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.
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)08 Oct 2026
- Exploited in EUVD (ENISA)08 Oct 2026
- Used by ransomwareno
- EPSS above 10 %99.6%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: 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.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Affected products
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
-
Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
-
EPSS peak: 99.6%
References
- cve.org · CVE-2015-5477
- ENISA EUVD · EUVD-2015-5432
- CISA KEV
- FIRST EPSS
- packetstormsecurity.com
- oracle.com
- lists.opensuse.org
- h20564.www2.hpe.com
- kb.juniper.net
- rhn.redhat.com
- lists.opensuse.org
- security.netapp.com
- kb.isc.org
- lists.fedoraproject.org
- marc.info
- marc.info
- rhn.redhat.com
- h20566.www2.hpe.com
- oracle.com
- kb.juniper.net