CVE-2026-28815

7.5 highEPSS 0.5%

High (7.5) in apple swift-crypto. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
CWE: CWE-125
Published: 2026-04-03
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

Affected

apple:swift-crypto

References

https://github.com/apple/swift-crypto/security/advisories/GHSA-9m44-rr2w-ppp7

Check your stack JSON