CVE-2026-18293

Code execution via OPJ parser out-of-bounds write

Published Aug 20, 2026 · Updated Aug 20, 2026

Out-of-bounds write in Origin Viewer 9.9.5 and earlier allows remote attackers to execute arbitrary code when a target opens a crafted OPJ file. The OPJ parser fails to validate user-supplied data before writing it, allowing a write past the end of an allocated data structure. Exploitation requires user interaction and runs code with the privileges of the logged-in user.

CVSS severity7.8
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Origin Viewer 9.9.5 and earlier allows remote attackers to execute arbitrary code when a target opens a crafted OPJ file. The OPJ parser fails to validate user-supplied data before writing it, allowing a write past the end of an allocated data structure. Exploitation requires user interaction and runs code with the privileges of the logged-in user.

The record

CVE
CVE-2026-18293
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
OriginLab Corporation
Product
Origin Viewer
Classifications
CWE-787, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.9.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OriginLab Corporation · Origin Viewerversion=9.9.5

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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