What’s Vulnerable › Vulnerabilities

CVE-2019-6469: BIND Supported Preview Edition can exit with an assertion failure if ECS is in use

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-10-09 · updated 2026-06-17
• Weakness: CWE-617

Description

An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition.

Affected products

• ISC BIND: 9.10.5-s1, 9.11.6-s1

References

• https://kb.isc.org/docs/cve-2019-6469
• https://support.f5.com/csp/article/K39751401?utm_source=f5support&amp%3Butm_medium=RSS
• https://kb.isc.org/docs/cve-2019-6469
• https://support.f5.com/csp/article/K39751401?utm_source=f5support&amp%3Butm_medium=RSS

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