Cyber Resilience

CVE-2024-27808

Apple Safari ≤ 17.5

Published
10 June 2024
Modified
02 April 2026
Patch / advisory
View advisory
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.012 65th percentile
Risk Priority 66 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2024-27808 is a high-severity Access of Memory Location Before Start of Buffer (CWE-786) vulnerability in Apple Safari. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 35% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

The issue was addressed with improved memory handling. This issue is fixed in Safari 17.5, iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.5, tvOS 17.5, visionOS 1.2, watchOS 10.5. Processing web content may lead to arbitrary code execution.

CWE(s)
NVD-CWE-noinfoCWE-786

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
T1687 Exploitation for Defense Impairment Defense Impairment
Adversaries may exploit vulnerabilities in security software, infrastructure, or defensive components to degrade, disable, or otherwise continue to impair their ability to prevent, detect, or respond to malicious activity.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-27840Same product: Apple Ipados
CVE-2024-27828Same product: Apple Ipados
CVE-2024-54508Same product: Apple Ipados
CVE-2024-54543Same product: Apple Ipados
CVE-2026-28859Same product: Apple Ipados
CVE-2024-54534Same product: Apple Ipados
CVE-2024-44244Same product: Apple Ipados
CVE-2024-40782Same product: Apple Ipados
CVE-2024-40776Same product: Apple Ipados
CVE-2024-54505Same product: Apple Ipados

Affected Assets

apple
safari
≤ 17.5
apple
ipados
≤ 17.5
apple
iphone os
≤ 17.5
apple
macos
14.0 — 14.5
apple
tvos
≤ 17.5
apple
visionos
≤ 1.2
apple
watchos
≤ 10.5

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.4.1

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and static/dynamic analysis can discover buffer-underflow conditions before deployment.

SA-8 Security and Privacy Engineering Principles partial match

Security engineering principles require use of memory-safe constructs, bounds checking, and avoidance of pointer arithmetic that can produce underflow accesses.

SI-10 Information Input Validation partial match

Input validation rejects or sanitizes untrusted indices or offsets before they are used to compute buffer pointers.

SI-16 Memory Protection partial match

Memory-protection controls limit the effects of an out-of-bounds read/write even if the erroneous access occurs.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent buffer underflows via safe coding, bounds checks, and analysis, but eliminating only this CWE covers a narrow slice of the control's broader intent.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect and eliminate pre-buffer memory accesses before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle includes buffer-boundary checks that reduce out-of-bounds reads before buffer start.

A.8.26 Application security requirements partial match
prevents

Application security requirements can mandate bounds checking and pointer validation to prevent pre-buffer accesses.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles promote safe memory handling and pointer arithmetic safeguards.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly require bounds checking and pointer validation that prevent this weakness.

References