CVE-2025-53893Public exploitNetwork attack vector

Authenticated server crash via unbounded file reads

Published Jul 15, 2025 · Updated Jul 15, 2025

Denial of service in File Browser 2.38.0 allows remote authenticated users to hang or crash the server by opening an oversized file. The file-reading path loads the entire uploaded file into memory without a size check, streaming, or resource limit. An account with file creation access must upload a very large file and initiate a read; successful exploitation interrupts the File Browser service through memory exhaustion.

CVSS severity6.5
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in File Browser 2.38.0 allows remote authenticated users to hang or crash the server by opening an oversized file. The file-reading path loads the entire uploaded file into memory without a size check, streaming, or resource limit. An account with file creation access must upload a very large file and initiate a read; successful exploitation interrupts the File Browser service through memory exhaustion.

The record

CVE
CVE-2025-53893
Published
Jul 15, 2025
Updated
Jul 15, 2025
Vendor
File Browser
Product
File Browser
Classifications
CWE-400, CWE-789, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2025Record 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== 2.38.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

File Browser · File Browserversion== 2.38.0

Published CVSS scores

7.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-789Memory Allocation with Excessive Size Value
T1499Endpoint Denial of Service

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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