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High

Process memory corruption in Apple SceneKit image processing

IdentifiersCVE-2026-39870CWE-119· Improper Restriction of Operations…

CVE-2026-39870 is a memory-handling vulnerability in Apple SceneKit affecting macOS Sonoma, macOS Sequoia, and macOS Tahoe. Apple states that processing a maliciously crafted image may corrupt process memory. The issue was addressed with improved memory handling and is fixed in macOS Sonoma 14.8.7, macOS Sequoia 15.7.7, and macOS Tahoe 26.5. The available context identifies SceneKit as the affected component but does not disclose the specific vulnerable function or code path.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can corrupt the memory of the target process handling the crafted image. Based on the vendor description, this can plausibly result in application instability or termination, and memory corruption may create conditions for further exploitation, but the provided information does not confirm code execution.

Mitigation

If you can’t patch tonight, do this now.

Until patches are applied, reduce exposure to untrusted image content processed by SceneKit-dependent applications and workflows. Avoid opening or rendering images from untrusted sources where possible, and limit use of affected applications in high-risk content-handling scenarios. No vendor-specified workaround is provided in the supplied content.

Remediation

Patch, then assume compromise.

Upgrade affected systems to a fixed release: macOS Sonoma 14.8.7, macOS Sequoia 15.7.7, or macOS Tahoe 26.5, which address the issue through improved memory handling in SceneKit.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
AppleMacosoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

9 SOURCESView more in app
+3 more in the timeline
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-39870
NVD
nvd.nist.gov/vuln/detail/CVE-2026-39870
MITRE CWE · CWE-119
Improper Restriction of Operations within the…
Vendor Advisory
support.apple.com/en-us/127115
Vendor Advisory
support.apple.com/en-us/127116
Vendor Advisory
support.apple.com/en-us/127117