Vulnerability details
CVE-2026-43798
Apple swift-nio-ssh
CVSS 3.1
9.8Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Apple | swift-nio-ssh | v < 0.14.1 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-08-21
- Last updated
- 2026-08-26
- State
- Published
- Assigner (CNA)
- apple
Exploit prediction (EPSS)
0.47%
Probability of exploitation in 30 days
40.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-121Stack-based Buffer Overflow