CVE-2025-61795Network attack vector

Service interruption via retained multipart upload files

Published Oct 27, 2025 · Updated Oct 27, 2025

Improper resource release in Apache Tomcat allows remote authenticated users to exhaust local storage through failed multipart uploads. Request.parseParts leaves created FileItem temporary files for garbage collection instead of deleting them when parsing fails. Repeated failures can fill temporary storage faster than collection clears it, interrupting service under sufficient load and JVM conditions.

CVSS severity5.3
Medium
EPSS probability1.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper resource release in Apache Tomcat allows remote authenticated users to exhaust local storage through failed multipart uploads. Request.parseParts leaves created FileItem temporary files for garbage collection instead of deleting them when parsing fails. Repeated failures can fill temporary storage faster than collection clears it, interrupting service under sufficient load and JVM conditions.

The record

CVE
CVE-2025-61795
Published
Oct 27, 2025
Updated
Oct 27, 2025
Vendor
The Apache Software Foundation
Product
Apache Tomcat
Classifications
CWE-404, T1499.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 27, 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=10.1.0-M1 <=10.1.46
  2. Affected versionversion=11.0.0-M1 <=11.0.11
  3. Affected versionversion=8.5.0 <=8.5.100
  4. Affected versionversion=9.0.0.M1 <=9.0.109

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Tomcatversion=10.1.0-M1 <=10.1.46; version=11.0.0-M1 <=11.0.11; version=8.5.0 <=8.5.100; version=9.0.0.M1 <=9.0.109

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499.003Endpoint Denial of Service: Application Exhaustion Flood

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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