Vulnerability · Published Oct 28, 2026 · Assigned by apple
CVE-2026-86983
Medium 5.9
In plain English
A medium-severity improper input validation in swift-crypto from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.3%top 80.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A remote attacker may be able to terminate a process that passes attacker-controlled input to the P-384 VOPRF API without bounding its length. This vulnerability is addressed in swift-crypto version 5.0.3.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apple | swift-crypto | 0 – before 5.0.3 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H