Multiple memory corruption issues were addressed with improved memory handling.
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, Safari 12.1.1, iTunes for Windows 12.9.5, iCloud for Windows 7.12. Processing maliciously crafted web content may lead to arbitrary code execution.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Dec 18, 2019
- Updated
- Jun 16, 2026
- EPSS
- 1.8% · 78th percentile
- CWE
- CWE-787
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Report tools
Action score
36
Monitor
Low priority for now.
- CVSS
- 35 / 40 · 8.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.8%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| apple | icloud | cpe:2.3:a:apple:icloud |
| apple | itunes | cpe:2.3:a:apple:itunes |
| apple | safari | cpe:2.3:a:apple:safari |
| apple | iphone os | cpe:2.3:o:apple:iphone_os |
| apple | mac os x | cpe:2.3:o:apple:mac_os_x |
| apple | tvos | cpe:2.3:o:apple:tvos |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apple icloud10.0 and later · up to 10.4 inclusive
- apple icloudbefore 7.12
- apple iphone osbefore 12.3
- apple itunesbefore 12.9.5
- apple mac os xbefore 10.14.5
- apple safaribefore 12.1.1
- apple tvosbefore 12.3
Versions reported by the vendor
Affected version ranges reported by the assigning authority (apple). Independent of NVD's CPE analysis and usually ahead of it.
Apple iCloud for Windows
- unspecified and later · before iCloud for Windows 7.12affected
Apple iOS
- unspecified and later · before iOS 12.3affected
Apple iTunes for Windows
- unspecified and later · before iTunes for Windows 12.9.5affected
Apple macOS
- unspecified and later · before macOS Mojave 10.14.5affected
Apple Safari
- unspecified and later · before Safari 12.1.1affected
Apple tvOS
- unspecified and later · before tvOS 12.3affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | webkit2gtk | before 2.24.1-1 | 2.24.1-1 |
| openSUSE:Leap 15.0 | webkit2gtk3 | before 2.24.2-lp151.2.3.1 | 2.24.2-lp151.2.3.1 |
| Red Hat:enterprise_linux:7::client | webkitgtk4 | before 0:2.28.2-2.el7 | 0:2.28.2-2.el7 |
| Red Hat:enterprise_linux:7::client | webkitgtk4-debuginfo | before 0:2.28.2-2.el7 | 0:2.28.2-2.el7 |
| Red Hat:enterprise_linux:7::client | webkitgtk4-devel | before 0:2.28.2-2.el7 | 0:2.28.2-2.el7 |
| Red Hat:enterprise_linux:7::client | webkitgtk4-doc | before 0:2.28.2-2.el7 | 0:2.28.2-2.el7 |
| Red Hat:enterprise_linux:7::client | webkitgtk4-jsc | before 0:2.28.2-2.el7 | 0:2.28.2-2.el7 |
| Red Hat:enterprise_linux:7::client | webkitgtk4-jsc-devel | before 0:2.28.2-2.el7 | 0:2.28.2-2.el7 |
| SUSE:Linux Enterprise Desktop 12 SP4 | webkit2gtk3 | before 2.24.2-2.44.1 | 2.24.2-2.44.1 |
Same product
apple: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-8506A type confusion issue was addressed with improved memory handling.KEV70This week
- CVE-2020-27932A type confusion issue was addressed with improved state handling.KEV64This week
- CVE-2020-9850A logic issue was addressed with improved restrictions.62This week
- CVE-2019-8600A memory corruption issue was addressed with improved input validation.45Plan
- CVE-2019-8746An out-of-bounds read was addressed with improved input validation.40Plan
- CVE-2020-9895A use after free issue was addressed with improved memory management.40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:webkit2gtk | 2.24.1-1 · Debian:12 | Package registry (OSV) |
| opensuse:webkit2gtk3 | 2.24.2-lp151.2.3.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| red hat:webkitgtk4 | 0:2.28.2-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:webkitgtk4-debuginfo | 0:2.28.2-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:webkitgtk4-devel | 0:2.28.2-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:webkitgtk4-doc | 0:2.28.2-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:webkitgtk4-jsc | 0:2.28.2-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:webkitgtk4-jsc-devel | 0:2.28.2-2.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:webkit2gtk3 | 2.24.2-2.44.1 · SUSE:Linux Enterprise Desktop 12 SP4 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- support.apple.com/HT210118
- support.apple.com/HT210119
- support.apple.com/HT210120
- support.apple.com/HT210123
- support.apple.com/HT210124
- support.apple.com/HT210125
- support.apple.com/HT210212
Vendor advisories and official records. Exploit/PoC links are deliberately left out.