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NVD / CVE Program· CNA apple

CVE-2025-43300: An out-of-bounds write issue was addressed with improved bounds checking.

Noroxi assessment

Priority: Now (action score 90/100)

  • CISA has confirmed exploitation in the wild (Aug 21, 2025). Remediation deadline for US federal agencies: Sep 11, 2025.
  • Probability of exploitation in the next 30 days: 65.1% (FIRST EPSS); higher than 99.2% of all records.
  • This probability rose by 33 points in the last 7 days.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • According to the record, no fixed version is available yet.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Patch today or shut off access. Until a fix is released, restrict access to the affected component and follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, macOS Ventura 13.7.8. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.

CriticalCVSS 10.0 · v3.1KEVWeaponized No fix recorded
Published
Aug 20, 2025
Updated
Jun 17, 2026
EPSS
65.1% · 99th percentile▲ 33

Report tools

JSON

Action score

90

Now

Patch today or shut off access.

CVSS
40 / 40 · 10.0 / 10
CISA KEV
30 / 30 · Listed
EPSS
20 / 30 · 65.1%

CISA SSVC decision

Exploitation
active
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Aug 21, 2025. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Sep 11, 2025.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-43300

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

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 15.8.5
  • apple ipados16.0 and later · before 16.7.12
  • apple ipados17.0 and later · before 17.7.10
  • apple ipados18.0 and later · before 18.6.2
  • apple iphone osbefore 15.8.5
  • apple iphone os16.0 and later · before 16.7.12
  • apple iphone os17.0 and later · before 18.6.2
  • apple macos13.0 and later · before 13.7.8
  • apple macos14.0 and later · before 14.7.8
  • apple macos15.0 and later · before 15.6.1

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 15.8.5affected
    • before 16.7.12affected
    • before 18.6.2affected

  • Apple iPadOS

    • before 17.7.10affected

  • Apple macOS

    • before 13.7.8affected
    • before 14.7.8affected
    • before 15.6.1affected

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-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

Published before and after this one in the same product

  • ← EarlierCVE-2025-43230Jul 29, 2025 · The issue was addressed with additional permissions checks.
    16Monitor
  • ← EarlierCVE-2025-43234Jul 29, 2025 · Multiple memory corruption issues were addressed with improved input validation.
    39Monitor
  • Later →CVE-2025-30468Sep 15, 2025 · This issue was addressed through improved state management.
    26Monitor

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

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Proof-of-concept repository on GitHub ×5

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:1182025-08-24
Proof-of-concept repository on GitHubstars:72025-09-09
Proof-of-concept repository on GitHubstars:02025-09-18
Proof-of-concept repository on GitHubstars:42025-09-30
Proof-of-concept repository on GitHubstars:12025-09-30

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.

  1. Published
  2. CISA KEVsame day
  3. First PoC+3 d
  4. TodayOct 28, 2026+433 d
EPSS, last 120 days+33% in 7 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-2026-86950404 days apartAn out-of-bounds write issue was addressed with improved bounds checking.KEV
    73This week
  • CVE-2024-23225533 days apartA memory corruption issue was addressed with improved validation.KEV
    61This week
  • CVE-2024-23296533 days apartA memory corruption issue was addressed with improved validation.KEV
    61This week
  • CVE-2025-4320922 days apartAn out-of-bounds access issue was addressed with improved bounds checking.
    39Monitor
  • CVE-2024-44242252 days apartThe issue was addressed with improved bounds checks.
    39Monitor
  • CVE-2026-64772341 days apartAn out-of-bounds write issue was addressed with improved input validation.
    39Monitor

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • 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

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

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

References

Show all references (11 more)

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

All records