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CVE-2026-64779· NVD / CVE Program· CNA apple

A memory corruption vulnerability was addressed with improved locking.

Noroxi assessment

Priority: Monitor (action score 12/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.37% (FIRST EPSS).
  • 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. Special conditions such as timing or configuration are required.
  • Fixed version: webkit2gtk3 (AlmaLinux:9) 2.54.0-1.el9_8; webkit2gtk3-devel (AlmaLinux:9) 2.54.0-1.el9_8; webkit2gtk3-jsc (AlmaLinux:9) 2.54.0-1.el9_8.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to webkit2gtk3 (AlmaLinux:9) 2.54.0-1.el9_8; webkit2gtk3-devel (AlmaLinux:9) 2.54.0-1.el9_8; webkit2gtk3-jsc (AlmaLinux:9) 2.54.0-1.el9_8 or later.

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 · FIRST EPSS

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.

LowCVSS 3.1 · v3.1—No exploit Fix available
Published
Aug 17, 2026
Updated
Sep 14, 2026
EPSS
0.3% · 30th percentile

Report tools

JSON

Action score

12

Monitor

Low priority for now.

CVSS
12 / 40 · 3.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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

Follow CVE-2026-64779

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 18.7.10
  • apple ipados26.0 and later · before 26.6.1
  • apple iphone osbefore 18.7.10
  • apple iphone os26.0 and later · before 26.6.1
  • apple macos26.0 and later · before 26.6.2

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 26.6.1affected

  • Apple macOS

    • before 26.6.2affected

  • Apple Safari

    • before 26.6.1affected

  • Apple visionOS

    • before 27affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9webkit2gtk3before 2.54.0-1.el9_82.54.0-1.el9_8
AlmaLinux:9webkit2gtk3-develbefore 2.54.0-1.el9_82.54.0-1.el9_8
AlmaLinux:9webkit2gtk3-jscbefore 2.54.0-1.el9_82.54.0-1.el9_8
AlmaLinux:9webkit2gtk3-jsc-develbefore 2.54.0-1.el9_82.54.0-1.el9_8
Debian:12webkit2gtkall versions—
Debian:12wpewebkitall versions—
Debian:13webkit2gtkbefore 2.54.0-1~deb13u12.54.0-1~deb13u1
Debian:14wpewebkitbefore 2.54.0-12.54.0-1

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.

Product / packageFixed versionSource
almalinux:webkit2gtk32.54.0-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:webkit2gtk3-devel2.54.0-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:webkit2gtk3-jsc2.54.0-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:webkit2gtk3-jsc-devel2.54.0-1.el9_8 · AlmaLinux:9Package registry (OSV)
debian:webkit2gtk2.54.0-1~deb13u1 · Debian:13Package registry (OSV)
debian:wpewebkit2.54.0-1 · Debian:14Package registry (OSV)

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-2026-4380521 days apartA race condition was addressed with improved state handling.
    39Monitor
  • CVE-2026-6472021 days apartA race condition was addressed with improved state handling.
    39Monitor
  • CVE-2026-20677187 days apartA race condition was addressed with improved handling of symbolic links.
    36Monitor
  • CVE-2026-6541528 days apartA race condition was addressed with additional validation.
    32Monitor
  • CVE-2026-8450728 days apartA race condition was addressed with improved state handling.
    31Monitor
  • CVE-2026-8460728 days apartA race condition was addressed with improved state management.
    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).

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.
  • A user must open a link or visit a page.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

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

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

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

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

All records