A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift-nio-ssh. This vulnerability is addressed in swift-nio-ssh version 0.14.1.

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

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Advisories

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Fixes

Solution

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Workaround

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References
Link Providers
https://github.com/apple/swift-nio-ssh/security/advisories/GHSA-998x-vgvp-xwpc cve-icon cve-icon
History

Fri, 21 Aug 2026 01:30:00 +0000

Type Values Removed Values Added
Title Stack Out‑of‑Bounds Write via Crafted SSH Message in Swift‑NIO‑SSH
Weaknesses CWE-119
CWE-122

Thu, 20 Aug 2026 21:15:00 +0000

Type Values Removed Values Added
Description A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift-nio-ssh. This vulnerability is addressed in swift-nio-ssh version 0.14.1.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-08-20T21:08:48.199Z

Reserved: 2026-05-01T22:46:27.820Z

Link: CVE-2026-43798

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-20T21:17:06.580

Modified: 2026-08-20T21:17:06.580

Link: CVE-2026-43798

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T01:15:07Z

Weaknesses