CVE-2017-7018: An issue was discovered in certain Apple products

Q: How do I fix CVE-2017-7018?

safari: upgrade to 10.1.2; iphone os: upgrade to 10.3.3; tvos: upgrade to 10.2.2. Exact commands for each OS are on this page.

Q: Is CVE-2017-7018 being exploited?

CVE-2017-7018 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-7018 affect?

CVE-2017-7018 affects safari, iphone os, tvos. Severity is high (CVSS 8.8). An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. iCloud before 6.2.2 on Windows is affected. iTunes before 12.6.2 on Windows is affected. tvOS before 10.2.2 is affected. The

Q: How urgent is CVE-2017-7018?

Priority 59/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

This month

HIGH 8.8UPGRADEUPGRADEUPGRADE

CVE-2017-7018 is a high-severity flaw (CVSS 8.8) affecting safari, iphone os, tvos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. iCloud before 6.2.2 on Windows is affected. iTunes before 12.6.2 on Windows is affected. tvOS before 10.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	7.0% (top 6%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-07-20
Last modified	2026-06-17

Publisher (CNA): Apple Inc. · Vendor: apple

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-07-20 16:29 UTCPublished CVE record published
2026-06-17 01:23 UTCUpdated Record last modified

apple safari UPGRADE

Affected: < 10.1.2

Fixed in: 10.1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy safari || rpm -q safari || safari --version

2. UPGRADE to 10.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade safari

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade safari

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

apple iphone os UPGRADE

Affected: < 10.3.3

Fixed in: 10.3.3

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

apple tvos UPGRADE

Affected: < 10.2.2

Fixed in: 10.2.2

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

apple icloud UPGRADE

Affected: < 6.2.2

Fixed in: 6.2.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy icloud || rpm -q icloud || icloud --version

2. UPGRADE to 6.2.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade icloud

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade icloud

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

apple itunes UPGRADE

Affected: < 12.6.2

Fixed in: 12.6.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy itunes || rpm -q itunes || itunes --version

2. UPGRADE to 12.6.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade itunes

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade itunes

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

apple webkit MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webkit || rpm -q webkit || webkit --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: WebKit JSC - 'DFG::ByteCodeParser::flush(InlineStackEntry* inlineStackEntry)' Incorrect Scope Register Handling

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-7018?

safari: upgrade to 10.1.2; iphone os: upgrade to 10.3.3; tvos: upgrade to 10.2.2. Exact commands for each OS are on this page.

Is CVE-2017-7018 being exploited?

CVE-2017-7018 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-7018 affect?

CVE-2017-7018 affects safari, iphone os, tvos. Severity is high (CVSS 8.8). An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. iCloud before 6.2.2 on Windows is affected. iTunes before 12.6.2 on Windows is affected. tvOS before 10.2.2 is affected. The

How urgent is CVE-2017-7018?

Priority 59/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

Software pages

Windows vulnerabilities · iOS vulnerabilities · Safari vulnerabilities · WebKit vulnerabilities · Apple Safari and WebKit vulnerabilities · tvOS vulnerabilities

Related CVEs

CVE-2023-43000 HIGH 8.8 EXPLOITED UPGRADE UPGRADE Apple Multiple products Use-After-Free Vulnerability
CVE-2026-43715 HIGH 8.8 UPGRADE UPGRADE A use-after-free issue was addressed with improved memory management
CVE-2025-43342 CRITICAL 9.8 UPGRADE UPGRADE A correctness issue was addressed with improved checks
CVE-2025-43343 CRITICAL 9.8 UPGRADE UPGRADE The issue was addressed with improved memory handling
CVE-2025-43376 HIGH 7.5 UPGRADE UPGRADE A logic issue was addressed with improved state management

References

← Back to latest CVEs