EUVD-2026-49463
GHSA-whqr-78r5-cq67
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Requires a local app to trigger, so AV:L and PR:L; only system termination occurs, so C:N/I:N/A:H.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
4DescriptionCVE.org
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
AnalysisAI
Out-of-bounds read in macOS allows a malicious app to trigger unexpected system termination. Patches are available in macOS Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. No active exploitation or public exploit code has been identified, and EPSS indicates low probability of widespread exploitation.
Technical ContextAI
The vulnerability arises from an out-of-bounds read (CWE-125) in macOS, likely within a kernel or system library component that processes input from user-space applications. An app can cause memory access beyond an allocated buffer, leading to a crash or unexpected behavior. The issue was addressed by improving bounds checking. Affected products are all versions of macOS prior to the fixed releases, as identified by CPE: cpe:2.3:a:apple:macos.
RemediationAI
Upgrade to macOS Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6 as appropriate for the device. If immediate patching is not feasible, restrict app installation to trusted sources (e.g., App Store only) to reduce the likelihood of running a malicious app that could trigger the vulnerability. No other workarounds are indicated in available advisories.
Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today