CVE-2026-86950: Apple Multiple Products

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

Yes, if you run Apple Multiple Products. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-09-29, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-10-13; treat that as the outer limit, not the target.
EPSS 1.2%, percentile 69: FIRST’s model estimates a 1.2% chance of exploitation activity in the next 30 days, higher than 69% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
Needs a user to click or open something. Phishing makes that realistic, but it is not wormable.
Editorial verdict: Patch this week. Apple CoreGraphics CVE-2026-86950: Exploited Zero-Day — A targeted file-parsing zero-day with a fix out since September 28: confirm every iPhone, iPad and Mac is on 26.7.1, 15.8.1 or a 27.x release this week, and today for high-risk users.

What it is

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.

CISA’s summary

Apple iOS, macOS, and iPadOS contain an out-of-bounds write vulnerability in CoreGraphics that may lead to arbitrary code execution.

Weakness type: CWE-787.

Product: Apple Multiple Products · Assigned by: apple · Published: 2026-09-28

Affected and fixed versions

Vendor	Product	Affected versions (per CVE record)
Apple	iOS and iPadOS	< 26.7.1
Apple	macOS	< 15.8.1, < 26.7.1

Severity scores

Scored by	CVSS	Score	Vector
CISA-ADP	3.1	8.8 High	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`

Attack vector: network (remotely reachable)
Attack complexity: low
Privileges required: none (no login)
User interaction: required (a user must click/open something)
Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

CISA KEV: added 2026-09-29; federal due date 2026-10-13. Known ransomware use: Unknown.
CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA SSVC assessment: exploitation active, automatable no, technical impact total.
FIRST EPSS (model of 2026-10-21): 1.24% probability of exploitation activity in the next 30 days; percentile 69.

Timeline

2026-09-28 — CVE record published by apple
2026-09-28 — erroneo.us brief: Apple CoreGraphics CVE-2026-86950: Exploited Zero-Day
2026-09-29 — Added to CISA’s Known Exploited Vulnerabilities catalog
2026-10-01 — CVE record last updated
2026-10-13 — CISA remediation deadline for US federal agencies

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Other references from the CVE record and advisory

seclists.org seclists.org
seclists.org seclists.org
seclists.org seclists.org

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