Answer in brief
CVE-2026-19662 records a Medium severity (CVSS 5.9) vulnerability in qpcache NOQNAME proof use-after-free crashes recursive resolver. The current sources do not mark it as known exploited. The current feed maps ISC/BIND 9 (generic), ISC/BIND 9 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ISC/BIND 9 (generic), ISC/BIND 9 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ISC/BIND 9generic | >=9.11.0 <=9.18.50 || >=9.20.0 <=9.20.27 || >=9.11.3-S1 <=9.18.50-S1 || >=9.20.9-S1 <=9.20.27-S1 | Not reported |
| ISC/BIND 9generic | 9.11.0 || 9.20.0 || 9.11.3-S1 || 9.20.9-S1 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Quoted source text, attributed separately from HOL analysis.