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ExploitedIn CISA KEVFix available

CVE-2026-86950

Exploitation confirmed. First attested on 2026-09-28 by CISA-ADP, CISA KEV, GCVE · enisa-cnw-kev, GCVE · previdian.

  • Published2026-09-28
  • Fixed in26.7.1 · 18.7.11
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, 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.

Timeline

dates in UTC
  1. 2026-09-2819:30Listed as exploited by GCVEGCVE
  2. 2026-09-2819:30Exploitation first reportedGCVE
  3. 2026-09-2820:17CVE publishedNVD
  4. 2026-09-29Added to the CISA KEV catalogCISA KEV
  5. 2026-09-3003:55SSVC exploitation set to activeCISA-ADP
  6. 2026-10-2523:12EPSS crossed 10 %FIRST EPSS

Versions per branch

NVD
Apple ipados
BranchAffectedFixed in
26.x≥ 26.0, < 26.7.126.7.1
18.7< 18.7.1118.7.11
Apple iphone os
BranchAffectedFixed in
26.x≥ 26.0, < 26.7.126.7.1
18.7< 18.7.1118.7.11
Apple macos
BranchAffectedFixed in
26.x≥ 26.0, < 26.7.126.7.1
15.8< 15.8.115.8.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA2 products

As apple, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Apple iOS and iPadOS
    Affected
    • < 26.7.1fixed in 26.7.1custom
  • Apple macOS
    Affected
    • < 15.8.1fixed in 15.8.1custom
    • < 26.7.1fixed in 26.7.1custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-09-28

Fix

  1. Update Apple ipados to 26.7.1 · 18.7.11
  2. CISA’s 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.due 2026-10-13

Advisories and patches

Detection

read 2026-11-09 09:30 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2026-09-29
Patch Due Date
2026-10-13
Ransomware Use
Unknown
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.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2026-09-28
Last Modified
2026-10-27
NVD status
Analyzed
GitHub Advisory
GHSA-3cf3-h799-fjvq

Frequently asked questions

What is CVE-2026-86950?

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, 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.

Is CVE-2026-86950 actively exploited?

Yes. CVE-2026-86950 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-10-13.

What is the CVSS score for CVE-2026-86950?

CVE-2026-86950 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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