# CVE-2026-26017: CoreDNS ACL Bypass

CVE-2026-26017 is fixed in 2 products on 1 platform, first by SUSE-SU-2026:1042-1, released March 25, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-26017
- Priority: High
- CVSS: 7.7 (Important)
- EPSS: 0.0042
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 9, 2026
- Weakness: Time-of-check Time-of-use (TOCTOU) Race Condition
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26017

## Description

fixes bsc#1259320

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | coredns opensuse-leap 16.0 | 1.14.2-bp160.1.1 | [OPENSUSE-SU-2026:20619-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20619-1.md) | Apr 23, 2026 |
| Linux | govulncheck-vulndb opensuse-leap 15.6 | 0.0.20260317T205859-150000.1.152.1 | [SUSE-SU-2026:1042-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1042-1.md) | Mar 25, 2026 |
| Linux | govulncheck-vulndb opensuse-leap 16.0 | 0.0.20260723T184607-160000.1.1 | [OPENSUSE-SU-2026:21483-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21483-1.md) | Jul 30, 2026 |

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Data as of 2026-11-11T13:47:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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