CVE-2026-84590
mediumAn out-of-bounds write issue was addressed with improved bounds checking.
Vendor / product: Apple — macos
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. A remote attacker may be able to cause unexpected app termination or heap corruption.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2026-10-26 21:20
Modified: 2026-11-04 17:34
NVD status: Analyzed
Last synced 8 hours ago
Verified against the source API 2026-11-04 17:35 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
apple / macos <15.8.2, ≥26.0 <26.7.2, ≥27.0 <27.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://support.apple.com/en-us/149521
Vendor advisory: https://support.apple.com/en-us/149522
Vendor advisory: https://support.apple.com/en-us/149523
References
- https://support.apple.com/en-us/149521 product-security@apple.com
- https://support.apple.com/en-us/149522 product-security@apple.com
- https://support.apple.com/en-us/149523 product-security@apple.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 17:35 UTC · record ↗