CVE-2026-43820: swiftnio ssl from 2.18.0 (inclusive), before 2.37.2 (exclusive); +1 more affected products

CVE-2026-43820. CVSS 3.1 base score 7.7 (HIGH, Source advisory). EPSS 0.00109 (percentile 0.01174), scored 22-Oct-2026.

Affected technology

swiftnio ssl · from 2.18.0 (inclusive), before 2.37.2 (exclusive)
apple

swift-nio-ssl · 0 to before 2.37.2
Apple

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 3.1): Local · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 7.7/10) rates confidentiality and availability impact as high; integrity impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 24-Oct-2026 15:08 UTC

CWE: CWE-125
CCR priority: 30.8 /100 (P4)
CVSS 3.1: 7.7 /10 · CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H · Source advisory
EPSS: 0.00109 · percentile 0.01173 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-43820.html