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CVE-2026-43818· NVD / CVE Program· CNA apple

An integer overflow was addressed with improved input validation.

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Processing a maliciously crafted image may lead to arbitrary code execution.

HighCVSS 8.8 · v3.1—No exploit No fix recorded
Published
Jul 27, 2026
Updated
Aug 17, 2026
EPSS
0.5% · 44th percentile
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Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
appleipados
appleiphone os
applemacos

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apple ipadosbefore 26.6
  • apple iphone osbefore 26.6
  • apple macos14.0 and later · before 14.8.8
  • apple macos15.0 and later · before 15.7.8
  • apple macos26.0 and later · before 26.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apple). Independent of NVD's CPE analysis and usually ahead of it.

  • Apple iOS and iPadOS

    • before 18.7.10affected
    • before 26.6affected

  • Apple macOS

    • before 14.8.8affected
    • before 15.7.8affected
    • before 26.6affected

Same product

apple: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-30860An integer overflow was addressed with improved input validation.KEV
    84Now
  • CVE-2025-43300An out-of-bounds write issue was addressed with improved bounds checking.KEV
    80Now
  • CVE-2023-41064A buffer overflow issue was addressed with improved memory handling.KEV
    77This week
  • CVE-2023-32434An integer overflow was addressed with improved input validation.KEV
    76This week
  • CVE-2025-24085A use after free issue was addressed with improved memory management.KEV
    75This week
  • CVE-2023-41993The issue was addressed with improved checks.KEV
    72This week

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-437690 days apartAn integer overflow was addressed with improved input validation.
    39Monitor
  • CVE-2026-647740 days apartAn integer overflow was addressed with improved input validation.
    39Monitor
  • CVE-2026-6534621 days apartAn integer overflow was addressed with improved input validation.
    35Monitor
  • CVE-2026-289730 days apartAn integer overflow was addressed with improved input validation.
    34Monitor
  • CVE-2026-437800 days apartAn integer overflow was addressed with improved input validation.
    31Monitor
  • CVE-2026-647650 days apartAn integer overflow was addressed with improved input validation.
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-190 · Integer Overflow or Wraparound

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records