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Fencer Vulns
high 7.5

CVE-2024-27840 json

The issue was addressed with improved memory handling.

published 2024-06-10 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-25033

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

The issue was addressed with improved memory handling. This issue is fixed in iOS 16.7.8 and iPadOS 16.7.8, iOS 17.5 and iPadOS 17.5, macOS Monterey 12.7.5, macOS Ventura 13.6.7, tvOS 17.5, visionOS 1.2, watchOS 10.5. An attacker that has already achieved kernel code execution may be able to bypass kernel memory protections.

Patch / fix

  • Apple iOS and iPadOS 16.7.8, 17.5
  • Apple macOS 12.7.5, 13.6.7
  • Apple tvOS 17.5
  • Apple visionOS 1.2
  • Apple watchOS 10.5
  • apple iphone_os 16.7.8, 17.5
  • apple ipad_os 16.7.8, 17.5

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 6.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
CNA 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

  • Apple iOS and iPadOS
  • Apple macOS
  • Apple tvOS
  • Apple visionOS
  • Apple watchOS
  • apple iphone_os
  • apple ipad_os

Classification

Weakness
  • CWE-786 Access of Memory Location Before Start of Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.