CVE-2025-65887Public exploitNetwork attack vector

Application crash via unchecked zero tensor divisor

Published Jan 28, 2026 · Updated Jan 28, 2026

Divide by zero in OneFlow 0.9.0 floor_divide allows attackers to crash an application process via a crafted zero-divisor tensor. The flow.floor_divide operator forwards divisor tensor elements into floor division without rejecting zero values, causing a fatal divide-by-zero condition. Exploitation requires an application to pass attacker-controlled tensors to this API and user interaction; the crash interrupts only the consuming process.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Divide by zero in OneFlow 0.9.0 floor_divide allows attackers to crash an application process via a crafted zero-divisor tensor. The flow.floor_divide operator forwards divisor tensor elements into floor division without rejecting zero values, causing a fatal divide-by-zero condition. Exploitation requires an application to pass attacker-controlled tensors to this API and user interaction; the crash interrupts only the consuming process.

The record

CVE
CVE-2025-65887
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-369, CWE-639, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-369Divide By Zero
CWE-639Authorization Bypass Through User-Controlled Key
T1499.004Application or System Exploitation

Public exploit references

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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