CVEs / CVE-2015-5477

CVE-2015-5477: ISC BIND Data Processing Errors Vulnerability

Known exploited in the CISA KEV catalog since 8 Oct 2026
high 7.8 CVSS 2.0 (NVD)
EPSS 99.5% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
Last changed at its sources 9 Oct 2026

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Summary

ISC BIND contains a data processing errors vulnerability that could allow remote attackers to cause a denial of service via TKEY queries.
CISA, Known Exploited Vulnerabilities catalog

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.
The CVE record, via NVD · published 29 Jul 2015 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
n/a n/a	n/a	—

Exploitation

In CISA KEV since	8 Oct 2026
Due date for US federal agencies	11 Oct 2026
Used in ransomware campaigns	Unknown
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 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.

Severity

CVSS 2.0	7.8 high `AV:N/AC:L/Au:N/C:N/I:N/A:C` Scored by NVD
Weakness	CWE-19, CWE-617

References

CVE-2015-5477 on NVD
CVE-2015-5477 in the CISA KEV catalog
https://web.archive.org/web/20150729014733/https://kb.isc.org/article/AA-01272 (cited by CISA)
https://access.redhat.com/errata/RHSA-2015:1513.html (cited by CISA)
https://supportportal.juniper.net/s/article/2016-01-Security-Bulletin-Junos-Vulnerability-in-ISC-BIND-named-CVE-2015-5477 (cited by CISA)
https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
CVE-2015-5477 on OSV
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10718 Mitigation, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163006.html Mailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163007.html Mailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163015.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00043.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00044.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00045.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00048.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00050.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00001.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00033.html Mailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=144000632319155&w=2 Mailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=144017354030745&w=2 Mailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=144181171013996&w=2 Mailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=144294073801304&w=2 Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/132926/BIND-TKEY-Query-Denial-Of-Service.html Third Party Advisory, VDB Entry
http://rhn.redhat.com/errata/RHSA-2015-1513.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1514.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1515.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0078.html Third Party Advisory

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.