Vendor
Isc vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 46 vulnerabilities in Isc: 0 in the last 7 days and 24 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-80274, was published on 16 September 2026. 4 technologies have a page of their own.
- Last 7 days
- 0
- Last 90 days
- 24
- Critical, all time
- 3
- Exploited in the wild
- 0
About Isc
Internet Systems Consortium (ISC) is a non-profit organization that develops and maintains core Internet software and infrastructure.
Isc technologies
Latest Isc vulnerabilities
- CVE-2026-80274: BIND resolver crash on DNSSEC-signed wildcard with NSEC mismatchhighCVSS 7.5EPSS 0.7%
- CVE-2026-77119: ISC BIND DNSSEC validation bypass with NSEC3 forgerymediumCVSS 5.9EPSS 0.2%
- CVE-2026-76163: ISC BIND assertion failure in TKEY query handlinghighCVSS 7.5EPSS 0.7%
- CVE-2026-75029: ISC BIND DNS cache memory exhaustion in query responsesmediumCVSS 5.3EPSS 0.7%
- CVE-2026-19668: ISC BIND recursive resolver excessive resource consumption on invalid DNSSEC recordsmediumCVSS 5.3EPSS 0.5%
- CVE-2026-19666: ISC BIND dns64 malformed answer crashhighCVSS 7.5EPSS 0.6%
- CVE-2026-19033: ISC BIND named TSIG signature validation bypass in zone transfersmediumCVSS 6.5EPSS 0.2%
- CVE-2026-81736: ISC BIND DNS resolver high CPU consumption via cached SVCB/HTTPS AliasMode recordshighCVSS 7.5EPSS 0.9%
- CVE-2026-81563: ISC BIND resolver resource exhaustion via SVCB/HTTPS AliasModehighCVSS 7.5EPSS 0.7%
- CVE-2026-78301: ISC BIND named zone parsing vulnerabilitymediumCVSS 5.8EPSS 0.2%
- CVE-2026-77692: ISC BIND DNS service denial of service via crafted DNS-over-HTTPS requesthighCVSS 7.5EPSS 0.7%
- CVE-2026-19941: ISC BIND named NSEC wildcard masking vulnerabilitymediumCVSS 5.9EPSS 0.2%
- CVE-2026-19667: ISC BIND named negative cache denial of servicehighCVSS 7.5EPSS 0.5%
- CVE-2026-19662: ISC BIND named resolver use-after-free denial of servicemediumCVSS 5.9EPSS 0.4%
- CVE-2026-18103: dhcp-server buffer overflow in OMAPI handlermediumCVSS 4.9EPSS 0.7%
- CVE-2026-13321: ISC BIND DNSSEC validation bypass in NSEC recordshighCVSS 8.6
- CVE-2026-13204: ISC BIND 9 denial of service via NSEC and NSEC3 assertion failurehighCVSS 7.5
- CVE-2026-12617: ISC BIND 9 denial of service via CNAME or DNAME record orderinghighCVSS 7.5
- CVE-2026-11721: ISC BIND 9 cache poisoning via RRSIG label count discrepancyhighCVSS 7.5
- CVE-2026-11622: ISC BIND 9 resource exhaustion in DNSSEC validating resolverhighCVSS 7.5
- CVE-2026-11605: ISC BIND 9 resource exhaustion in DNSSEC validationhighCVSS 7.5
- CVE-2026-11331: ISC BIND 9 RPZ policy bypass and denial of servicehighCVSS 7.5
- CVE-2026-10822: ISC BIND assertion failure via malformed PRIVATEDNS recordmediumCVSS 6.5
- CVE-2026-10723: ISC BIND incorrect NSEC3 record validationmediumCVSS 6.8
- CVE-2026-5950: ISC BIND 9 unbounded resend loop in resolver state machinemediumCVSS 5.3
Most severe Isc vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-1999-0009: ISC BIND buffer overflow in inverse query handlingcriticalCVSS 10
- CVE-1999-0100: IBM AIX innd remote access via control messagescriticalCVSS 10
- CVE-1999-0043: ISC InterNetNews innd command injection via control messagescriticalCVSS 9.8
- CVE-2026-13321: ISC BIND DNSSEC validation bypass in NSEC recordshighCVSS 8.6
- CVE-2025-13878: ISC BIND 9 denial of service via malformed BRID or HHIT recordshighCVSS 7.5EPSS 7.6%
- CVE-2026-3608: ISC Kea stack overflow in multiple daemons via API sockethighCVSS 7.5EPSS 1.1%
- CVE-2026-81736: ISC BIND DNS resolver high CPU consumption via cached SVCB/HTTPS AliasMode recordshighCVSS 7.5EPSS 0.9%
- CVE-2026-80274: BIND resolver crash on DNSSEC-signed wildcard with NSEC mismatchhighCVSS 7.5EPSS 0.7%
- CVE-2026-76163: ISC BIND assertion failure in TKEY query handlinghighCVSS 7.5EPSS 0.7%
- CVE-2026-81563: ISC BIND resolver resource exhaustion via SVCB/HTTPS AliasModehighCVSS 7.5EPSS 0.7%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 9 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 1 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 14 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/isc.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Isc vulnerabilities", https://junglewise.ai/threats/vendors/isc, 26 September 2026.