🛡️ CVE-2026-65400 — macos

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-65400 is classified as CWE-287: Improper Authentication. The identity of the caller is not established correctly, so an attacker can act as another user.

Affected software

CVE-2026-65400 is recorded against 1 package.

• macos (from 26.0 up to 26.6.1)

Timeline and source

Published on 6 August 2026 and last revised on 19 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

support.apple.com
support.apple.com
support.apple.com
seclists.org
seclists.org
advisories.ncsc.nl
www.cisa.gov

Other advisories for this package

macos has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-43754 (5.5 Medium, published 27 Jul 2026)
• CVE-2026-43800 (5.5 Medium, published 27 Jul 2026)
• CVE-2026-64708 (5.5 Medium, published 27 Jul 2026)
• CVE-2026-64749 (7.8 High, published 27 Jul 2026)
• CVE-2026-28896 (7.7 High, published 27 Jul 2026)
• CVE-2026-28928 (9.8 Critical, published 27 Jul 2026)
• CVE-2026-43775 (5.5 Medium, published 27 Jul 2026)
• CVE-2026-64692 (7.1 High, published 27 Jul 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-287: Improper Authentication) in other software:

• CVE-2022-24885 (2.0 Low, published 12 Jul 2026)
• CVE-2022-39254 (8.0 High, published 7 Jul 2026)
• CVE-2014-0056 (published 6 Jul 2026)
• CVE-2012-4456 (8.0 High, published 6 Jul 2026)
• CVE-2000-1211 (8.0 High, published 2 Jul 2026)
• CVE-2000-0483 (published 2 Jul 2026)
• CVE-2019-17134 (9.5 Critical, published 29 Jun 2026)
• CVE-2022-37298 (9.8 Critical, published 29 Jun 2026)

Details

Affected Packages

References