High

Heap-based Buffer Overflow in Adobe USD-Fileformat-plugins usdGltf Plugin

IdentifiersCVE-2026-48291CWE-122· Heap-based Buffer Overflow

CVE-2026-48291 is a heap-based buffer overflow affecting Adobe USD-Fileformat-plugins, specifically the usdGltf plugin, in Format Plugins version 1.1.2 and earlier. The flaw is caused by improper validation of the length of user-supplied data before that data is copied into a heap-based buffer. A remote attacker can trigger the vulnerability by supplying a crafted malicious file that is processed through the vulnerable plugin. Successful exploitation can lead to arbitrary code execution in the context of the current process or current user.

For your environment

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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 allows arbitrary code execution in the security context of the current user/process. Because the flaw is triggered during parsing of attacker-controlled file content, an attacker can use a malicious file to compromise the affected application, potentially resulting in full compromise of the user's data accessible to that process, installation of malware, further lateral activity under the user's privileges, or application instability/crash.

Mitigation

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

Until the vendor update is applied, avoid opening untrusted or externally supplied files with Adobe USD-Fileformat-plugins, especially content that may invoke the usdGltf plugin. Limit processing to trusted content sources, reduce exposure of workflows that automatically ingest such files, and run affected applications with least privilege to reduce the impact of successful exploitation.

Remediation

Patch, then assume compromise.

Apply Adobe's security update addressing CVE-2026-48291. Adobe published remediation details in security bulletin APSB26-65. Affected users should upgrade from Format Plugins 1.1.2 and earlier to a fixed version newer than 1.1.2 as provided by Adobe.

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

AdobeFormat Pluginsapplication

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

ACTIVITY FEED

Recent activity

3 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

3 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

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-2026-48291

NVD

nvd.nist.gov/vuln/detail/CVE-2026-48291

MITRE CWE · CWE-122

Heap-based Buffer Overflow

Vendor Advisory

helpx.adobe.com/security/products/formatplugins/apsb26-65.html