CVE-2015-5477: ISC BIND Data Processing Errors Vulnerability
What it is
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
Treat this as urgent. Identify every affected system, starting with anything internet-facing, and apply the vendor fix or mitigation within days. If you cannot patch quickly, isolate or disable the affected service and watch for signs of compromise.
- Priority
- Act now: Patch or mitigate internet-facing systems within days.
- Severity (CVSS)
- 7.5 high
- CISA assessment (SSVC)
- actively exploited; attackers can automate it at scale; total control of the affected system
- Exploit probability (EPSS, 30 days)
- 99%, in the top 1% of all CVEs
- Added to CISA KEV
- 8 October 2026
- CISA fix-by date
- 11 October 2026 (US federal agencies; a sensible deadline for everyone)
- Ransomware use
- Not known
- Weakness
- CWE-19, CWE-617
References
- NIST NVD entry
- CISA KEV entry
- kb.juniper.net/InfoCenter/index?page=content&id=JSA10718
- lists.fedoraproject.org/pipermail/package-announce/2015-August/163006.html
- lists.fedoraproject.org/pipermail/package-announce/2015-August/163007.html
- lists.fedoraproject.org/pipermail/package-announce/2015-August/163015.html
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00043.html
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00044.html
Sources: CISA Known Exploited Vulnerabilities · FIRST Exploit Prediction Scoring System (EPSS) · NIST National Vulnerability Database · CISA Vulnrichment (SSVC), via the CVE Program. This product uses data from the NVD API but is not endorsed or certified by the NVD. Summaries are machine-written from CISA’s description; treat the vendor’s advisory as the authority for fixes.