What is CVE-2026-65329?

CVE-2026-65329 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Authentication. CVSS score: 5.9/10. Published 2026-08-17.

How severe is CVE-2026-65329?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Auth bypass in Apple iOS And Ipados

CVE-2026-65329

An authentication issue was addressed with improved state management. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, iOS 27 and iPadOS 27. An attacker in a privileged network position may be able to bypass IPSec authentication and intercept network traffic.

Vulnerability class: Broken Authentication

Published 2026-08-17 · last modified 2026-09-14.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (13.9th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

support.apple.com/en-us/148282 (Release Notes, Vendor Advisory)
support.apple.com/en-us/149034

Frequently asked questions

What is CVE-2026-65329?: CVE-2026-65329 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Authentication. CVSS score: 5.9/10. Published 2026-08-17.
How severe is CVE-2026-65329?: Medium severity. CVSS v3 base score is 5.9 out of 10.