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CVE-2017-7157: An issue was discovered in certain Apple products

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HIGH 8.8UPGRADEUPGRADEUPGRADE

CVE-2017-7157 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 11.2 is affected. Safari before 11.0.2 is affected. iCloud before 7.2 on Windows is affected. iTunes before 12.7.2 on Windows is affected. tvOS before 11.2 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

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance2.5% (top 15%)
CISA exploited listNo
WeaknessCWE-119
Published2017-12-27
Last modified2026-06-17
Publisher (CNA): Apple Inc. · Vendor: apple

Share: LinkedIn · X · Reddit

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

Am I affected?

Timeline

apple safari UPGRADE
Affected: < 11.0.2
Fixed in: 11.0.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy safari || rpm -q safari || safari --version
2. UPGRADE to 11.0.2 (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: < 11.2
Fixed in: 11.2
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 tvos UPGRADE
Affected: < 11.2
Fixed in: 11.2
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: < 7.2
Fixed in: 7.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy icloud || rpm -q icloud || icloud --version
2. UPGRADE to 7.2 (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: < 12.7.2
Fixed in: 12.7.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy itunes || rpm -q itunes || itunes --version
2. UPGRADE to 12.7.2 (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.
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-2017-7157?

safari: upgrade to 11.0.2; iphone os: upgrade to 11.2; tvos: upgrade to 11.2. Exact commands for each OS are on this page.

Is CVE-2017-7157 being exploited?

CVE-2017-7157 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-2017-7157 affect?

CVE-2017-7157 affects safari, iphone os, tvos. Severity is high (CVSS 8.8). An issue was discovered in certain Apple products. iOS before 11.2 is affected. Safari before 11.0.2 is affected. iCloud before 7.2 on Windows is affected. iTunes before 12.7.2 on Windows is affected. tvOS before 11.2 is affected. The issue

How urgent is CVE-2017-7157?

Priority 52/100. High severity

Software pages

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

Related CVEs

References

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