CVE-2026-28815
High
Description
A remote attacker can supply a short X-Wing HPKE encapsulated key and trigger an out-of-bounds read in the C decapsulation path, potentially causing a crash or memory disclosure depending on runtime protections. This issue is fixed in swift-crypto version 4.3.1.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apple Swift-crypto
PublishedApr 3, 2026
First seenApr 3, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- apple swift-crypto4.3.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple swift-crypto | 4.0.0 ≤ v < 4.3.1 | 4.3.1 |
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