A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 a…
cve CVE-2026-86881 1 source, 1 claim · Watch
NVD writes:
A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate certificate authority may be able to issue certificates with arbitrary extended key usages. the claim
A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate certificate authority may be able to issue certificates with arbitrary extended key usages. the claim
- Severity
- CRITICAL NVD
- CVSS
- 9.1 NVD
- Fixed in
- 26.7, 27, 15.8 NVD
- Vendor
- Apple NVD
- Product
- iOS and iPadOS NVD
- CWE
- CWE-295 NVD
How far exploitation has got
- No public code known
- Proof of concept
- Proof of concept, verified
- A Metasploit module
- Exploited in the wild
- Used in ransomware campaigns
Timeline
| 2026-09-14 | first spoke of it: A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate certificate authority may be able to issue certificates with arbitrary extended key usages. | NVD |
A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate certificate authority may be able to issue certificates with arbitrary extended key usages.
What it is to other things
| affects | apple/ipados NVD |
| affects | apple/iphone_os NVD |
| affects | apple/macos NVD |
| affects | apple/tvos NVD |
| affects | apple/visionos NVD |
| affects | apple/watchos NVD |
| made_by | apple NVD |
In words only, so not counted until a person confirms one:
| affects | apple/ios_and_ipadosNVD says “Apple · iOS and iPadOS” |
Every value, with what each source said and its receipt
| Property | Source | Said | Means here | ||||
|---|---|---|---|---|---|---|---|
| Automatable automatable | NVD | yes An attacker can reliably run all of the kill chain's first four steps without a person. receipt
What the source handed over{
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} | — | ||||
| CVSS cvss | NVD | 9.1receipt
What the source handed over{
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| CVSS vector cvss_vector | NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nreceipt
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| CWE cwe | NVD | CWE-295receipt
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| Exploitation exploitation | NVD | none No evidence of exploitation, and no public proof of concept. receipt
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| Fixed in fixed_in | NVD | 26.7, 27, 15.8receipt
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| Product product | NVD | iOS and iPadOSreceipt
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| Vendor vendor | NVD | Applereceipt
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Every claim, by kind
vulnerability
| A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate certificate authority may be able to issue certificates with arbitrary extended key usages. zetlyn/cve-nvd · 2026-09-14 | automatable yes cvss 9.1 cvss_vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N cwe CWE-295 exploitation none fixed_in 26.7, 27, 15.8 product iOS and iPadOS severity CRITICAL status Analyzed technical_impact total vendor Apple | source |