Skip to content
Fencer Vulns
medium 5.9

CVE-2026-86983 json

A remote attacker may be able to terminate a process that passes attacker-controlled input to the P-384 VOPRF API without bounding its leng…

published 2026-10-28 11 d ago modified 2026-11-04 4 d ago also EUVD-2026-112556

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

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.

Patch / fix

  • Apple swift-crypto 5.0.3

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-86983 updated cvss 7.5

swift-crypto: swift-crypto: Denial of Service via unbounded input to the P-384 VOPRF API

  • Red Hat Hardened Images swift-lang 6.4.2-0.2.hum1, swift-lang-runtime 6.4.2-0.2.hum1
    fixed: vendor fix RHSA-2026:93977

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4 d ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Apple swift-crypto

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.