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Full vulnerability report · 2019
CVE-2018-4344High confidence

Apple Multiple Products Memory Corruption Vulnerability

Apple · Multiple Products

7.8HighCVSS 3.1
Recommended action
Mitigate now

CISA confirms exploitation in the wild and lists 2022-07-18 as the remediation due date.

Mitigation available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 27 Jun 2022

Evidence used

  • CISA confirms exploitation in the wild.
  • EPSS is 2.37% for the current model date.

Compensating controls

  • Apply the linked authoritative mitigation while planning the permanent fix.
  • Restrict local access and enforce least privilege on affected hosts.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Apple Multiple Products and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2018-16130

CISA KEV mirrored by ENISA

A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 27 Jun 2022. Evidence sources: cisa_kev.
ENISA score
7.8 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionMitigate now

CISA confirms exploitation in the wild and lists 2022-07-18 as the remediation due date.

Mitigation available
01

What, why and how

Apple iOS, macOS, tvOS, and watchOS contain a memory corruption vulnerability which can allow for code execution.

What

Apple iOS, macOS, tvOS, and watchOS contain a memory corruption vulnerability which can allow for code execution.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Apple iOS, macOS, tvOS, and watchOS contain a memory corruption vulnerability which can allow for code execution.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2022-06-27.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Improper Restriction of Operations within the Bounds of a Memory Buffer → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-119 ↗

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer. The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
UnauthenticatedCWE-119CISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2018-16130Known-exploited evidence recorded

A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.

Official EUVD record ↗
Canadian Centre for Cyber Security · English · AV18-157Apple security updates

Apple has released security updates for vulnerabilities in various products using macOS Mojave 10.14. Affected products: -MacBook (Early 2015 and later), -MacBook Air (Mid 2012 and later), -MacBook Pro (Mid 2012 and later), -Mac mini (Late 2012 and later), -iMac (Late 2012 and later), -iMac Pro (all models), -Mac Pro (Late 2013, Mid 2010, and Mid 2012 models with recommended Metal-capable graphics processor, including MSI Gaming Radeon RX 560 and Sapphire Radeon PULSE RX 580) CVE References: CVE-2018-5383, CVE-2018-4324, CVE-2018-4353, CVE-2018-4321, CVE-2018-4333, CVE-2018-4336, CVE-2018-4344, CVE-2016-1777

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-455Multiples vulnérabilités dans Apple macOS

De multiples vulnérabilités ont été découvertes dans Apple macOS. Elles permettent à un attaquant de provoquer une exécution de code arbitraire, un contournement de la politique de sécurité et une atteinte à la confidentialité des données.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2018-014994複数の Apple 製品におけるメモリ破損の脆弱性

複数の Apple 製品には、メモリ処理に不備があるため、メモリ破損の脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5649현재 악용되고 있는 Exploit(Update. 2022-06-27)

Apple iOS, macOS, tvOS, and watchOS contain a memory corruption vulnerability which can allow for code execution.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Mitigation available
Affected
iOS, macOS, tvOS, watchOS: Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Apply updates per vendor instructions.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 3 Apr 2019 · Last source change 21 Oct 2025, 23:45 UTC · CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2018-16130
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. ENISA known-exploited stateENISA EUVD now records this CVE in its known-exploited dataset.
    Before
    not listed in ENISA EUVD known-exploited dataset
    After
    listed in ENISA EUVD known-exploited dataset (EUVD-2018-16130)
    ENISA EUVD ↗
  2. ENISA EUVD mappingEUVD-2018-16130 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2018-16130"}
    ENISA EUVD ↗
  3. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: knvd.krcert.or.kr/detail?id=62b87470d082fd0d2a52db80.
    Before
    remediation: knvd.krcert.or.kr/detail?id=62b87470d082fd0d2a52db80 · vendor advisory: support.apple.com/HT209106 · vendor advisory: support.apple.com/HT209107 · 2 more references
    After
    vendor advisory: support.apple.com/HT209106 · vendor advisory: support.apple.com/HT209107 · vendor advisory: support.apple.com/HT209108 · 1 more references
    support.apple.com ↗
  4. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    support.apple.com ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    iOS, macOS, tvOS, watchOS: Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  6. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: support.apple.com/HT209106; added vendor advisory: support.apple.com/HT209107; 2 further additions.
    Before
    no authoritative guidance recorded
    After
    vendor advisory: support.apple.com/HT209106 · vendor advisory: support.apple.com/HT209107 · vendor advisory: support.apple.com/HT209108 · 1 more references
    support.apple.com ↗
  7. CVSS scoreCVSS scoring authority changed from CISA ADP to NIST NVD; the displayed base score remained 7.8.
    Before
    7.8 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
    After
    7.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
    NIST NVD ↗
  8. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
  9. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    KISA KrCERT/CC ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Remediation guidance recorded
ENISA EUVD · EUVD-2018-16130↗KISA KrCERT/CC remediation guidance↗CISA KEV record↗CVE authority or vendor reference↗Vendor advisory↗Vendor advisory↗Vendor advisory↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2018-4344 · cve.blacktree.nl