# CVE-2026-77692: bind9: An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid S...

CVE-2026-77692 is fixed in 6 products on 1 platform, first by bind9 1:9.20.24-1ubuntu0.4, released September 16, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-77692
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0656
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 16, 2026

## Description

An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bind opensuse-leap 16.0 | 9.20.29-160000.1.1 | [OPENSUSE-SU-2026:22049-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22049-1.md) | Oct 7, 2026 |
| Linux | bind sles 15.7 | 9.20.29-150700.3.32.2 | [SUSE-SU-2026:4285-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4285-1.md) | Sep 22, 2026 |
| Linux | bind sles 16.0 | 9.20.29-160000.1.1 | [SUSE-SU-2026:24157-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24157-1.md) | Oct 7, 2026 |
| Linux | bind9 Debian 13.5 (trixie) | 1:9.20.29-1~deb13u1 | [DEBIAN-CVE-2026-77692](https://patchblox.com/security/data/fix/linux/debian-cve-2026-77692.md) | Sep 18, 2026 |
| Linux | bind9 Debian 14 | 1:9.20.29-1 | [DEBIAN-CVE-2026-77692](https://patchblox.com/security/data/fix/linux/debian-cve-2026-77692.md) | Sep 18, 2026 |
| Linux | bind9 Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | [bind9 1:9.20.24-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-1-9.20.24-1ubuntu0.4.md) | Sep 16, 2026 |
| Linux | bind9-dnsutils Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | [bind9-dnsutils 1:9.20.24-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-dnsutils-1-9.20.24-1ubuntu0.4.md) | Sep 16, 2026 |
| Linux | bind9-host Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | [bind9-host 1:9.20.24-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-host-1-9.20.24-1ubuntu0.4.md) | Sep 16, 2026 |
| Linux | bind9-libs Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | [bind9-libs 1:9.20.24-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-libs-1-9.20.24-1ubuntu0.4.md) | Sep 16, 2026 |
| Linux | bind9-utils Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | [bind9-utils 1:9.20.24-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-utils-1-9.20.24-1ubuntu0.4.md) | Sep 16, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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