# OPENSUSE-SU-2026:21083-1: unbound security update

OPENSUSE-SU-2026:21083-1, released June 18, 2026, fixes 10 CVEs in unbound (version 1.24.1-160000.2.1). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2026-21083-1
- Platform: Linux
- Released: Jun 18, 2026
- Priority: Urgent (Closes CVE-2026-33278, rated Critical)
- CVEs: 10, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2026:21083-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [unbound](https://patchblox.com/security/data/product/linux/unbound.md) | opensuse-leap 16.0 | 1.24.1-160000.2.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-33278](https://patchblox.com/security/data/cve/CVE-2026-33278.md) | Urgent | Possible arbitrary code execution during DNSSEC validation | 9.8 | 0.0142 |  |
| [CVE-2026-42944](https://patchblox.com/security/data/cve/CVE-2026-42944.md) | High | Heap overflow with multiple NSID, COOKIE, PADDING EDNS options | 8.1 | 0.0084 |  |
| [CVE-2026-42959](https://patchblox.com/security/data/cve/CVE-2026-42959.md) | High | Crash during DNSSEC validation of malicious content | 8.1 | 0.0081 |  |
| [CVE-2026-41292](https://patchblox.com/security/data/cve/CVE-2026-41292.md) | High | Long list of incoming EDNS options degrades performance | 7.5 | 0.0075 |  |
| [CVE-2026-44390](https://patchblox.com/security/data/cve/CVE-2026-44390.md) | High | Unbounded name compression in certain cases causes degradation of service | 7.5 | 0.0065 |  |
| [CVE-2026-42534](https://patchblox.com/security/data/cve/CVE-2026-42534.md) | High | Jostle logic bypass degrades resolution performance | 7.5 | 0.0060 |  |
| [CVE-2026-42960](https://patchblox.com/security/data/cve/CVE-2026-42960.md) | High | Possible cache poisoning via promiscuous records for the authority section | 10.0 | 0.0026 |  |
| [CVE-2026-42923](https://patchblox.com/security/data/cve/CVE-2026-42923.md) | Routine | Degradation of service with unbounded NSEC3 hash calculations | 5.3 | 0.0034 |  |
| [CVE-2026-32792](https://patchblox.com/security/data/cve/CVE-2026-32792.md) | Routine | Packet of death with DNSCrypt | 5.3 | 0.0034 |  |
| [CVE-2026-44608](https://patchblox.com/security/data/cve/CVE-2026-44608.md) | Routine | Use after free and crash under special conditions in RPZ code | 5.9 | 0.0026 |  |

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Data as of 2026-11-10T07:50:38Z 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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