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VulnerabilityPublished Updated

CVE-2026-43738: The issue was addressed with improved memory handling

Source GCVE Database

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Authoritative record:CVE-2026-43738· Medium 5.5

Not known to be exploited · CVSS 5.5 Medium : upgrade to 27 or 18.7.10 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.15.5
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 27, 18.7.10, 15.7.8 +1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade iOS and iPadOS to 27 or 18.7.10; macOS to 27, 15.7.8 or 14.8.8.

Affected software

ProductAffectedFixed in
AppleiOS and iPadOSAffected
  • <27
Fixed in
  • 27
AppleiOS and iPadOSAffected
  • <18.7.10
Fixed in
  • 18.7.10
ApplemacOSAffected
  • <27
Fixed in
  • 27
ApplemacOSAffected
  • <15.7.8
Fixed in
  • 15.7.8
ApplemacOSAffected
  • <14.8.8
Fixed in
  • 14.8.8

AI-suggested

This vulnerability is fixed in macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8. Users and administrators should apply these updates to remediate the issue. No further mitigation actions are indicated by the vendor advisory.

Description

CVE-2026-43738 is a medium severity vulnerability in macOS that involves improper memory handling when processing asset catalogs. This flaw could allow an attacker to cause disclosure of process memory by using a maliciously crafted asset catalog. The issue has been fixed in macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.

References

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