UpHeron
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Servers and applications

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.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 8 Oct 2026.

Severity
High 7.5
Published
29 Jul 2015
Last changed
3 Nov 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.9.7, 9.10.2
Exploit chance
100% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-19CWE-617
Attack
Over the network · No login needed · No user action needed
Attacker can
Take it down
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Sources
NVD

Affected software

SoftwareAffected versions
BIND 9Servers and applications · cpe:a:isc:bind
  • From 9.1.0 before 9.9.7
  • From 9.10.0 before 9.10.2
  • Version 9.10.2-p1

Known exploited

CISA name
ISC BIND Data Processing Errors Vulnerability
Required action
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…
Due for US agencies
11 Oct 2026
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-5477
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-5477