EUVD-2026-78103
GHSA-54m8-55w4-j5vh
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Local malicious app (AV:L/PR:L) exploiting a logic flaw (AC:L) that only deletes credentials, so integrity-only impact.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
6DescriptionCVE.org
This issue was addressed by removing the vulnerable code. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. An app may be able to delete credentials stored in Keychain.
AnalysisAI
Improper access control in Apple's Keychain service lets a locally installed app delete credentials stored by other applications on iOS 27, iPadOS 27, macOS Golden Gate 27, and visionOS 27 (all versions prior to these releases). The bug is fixed by removing the vulnerable code path; it is rated CVSS 5.5 with integrity-only impact, and there is no public exploit or CISA KEV confirmation at time of analysis (EPSS 0.15%).
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a malicious or compromised application to be installed and running on the target Apple device, which matches the CVSS vector's local attack vector and low privileges (AV:L/PR:L) with no user interaction beyond the app executing (UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N) describes a low-complexity, local, low-privilege attack with no user interaction beyond having the malicious app running, and impact limited to integrity - Keychain entries can be deleted but not read (C:N) and the system is not taken down (A:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to the fixed releases: iOS 27, iPadOS 27, macOS Golden Gate 27, and visionOS 27, which remove the vulnerable code per Apple's advisories (https://support.apple.com/en-us/149034, https://support.apple.com/en-us/149035, https://support.apple.com/en-us/149038). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today