CVE-2019-8840

HIGH

8.8

CVSS Score

Published: October 27, 2020 at 07:54 PM UTC

Updated: June 17, 2026 at 02:42 AM UTC

1 product affected across 1 vendorXcode

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Severity

HIGH8.8

Exploit prediction

EPSS 1%

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in Xcode 11.3. Compiling with untrusted sources may lead to arbitrary code execution with user privileges.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Xcode · Apple

95%

v < 11.3

Affected range stops below 11.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://support.apple.com/en-us/HT210796

References (1)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT210796

CVSS

8.8HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-125

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