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CVE-2026-84516

8.1 HIGHEPSS 0.42%
  1. Published14 Sept 2026

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Processing a maliciously crafted file may result in unexpected app termination or disclosure of process memory.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Affected products

Apple Macos≥ 15.0 < 15.8 · ≥ 26.0 < 26.7

Remediation

Fixed in
Apple Macos≥ 15.8

References

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Frequently asked

Is CVE-2026-84516 being actively exploited?

CVE-2026-84516 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.42%.

How severe is CVE-2026-84516?

CVE-2026-84516 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.42% probability of exploitation.

Which products are affected by CVE-2026-84516?

Affected products include Apple Macos.

How do I fix CVE-2026-84516?

Upgrade affected software to a fixed version, for example Apple Macos 15.8 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-84516 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.