CVE-2024-37358Network attack vector

Service interruption via unbounded IMAP literals

Published Feb 6, 2025 · Updated Sep 1, 2025

Uncontrolled resource consumption in Apache James Server before 3.7.6 and 3.8.0 through 3.8.1 allows remote attackers to interrupt service. The Netty IMAP request readers fail to cap cumulative literal bytes, literal count, and pre-authentication literal size, enabling unbounded memory allocation and lengthy computation. Authentication is unnecessary; repeated crafted literals can consume server resources until legitimate mail access is interrupted.

CVSS severity8.6
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Apache James Server before 3.7.6 and 3.8.0 through 3.8.1 allows remote attackers to interrupt service. The Netty IMAP request readers fail to cap cumulative literal bytes, literal count, and pre-authentication literal size, enabling unbounded memory allocation and lengthy computation. Authentication is unnecessary; repeated crafted literals can consume server resources until legitimate mail access is interrupted.

The record

CVE
CVE-2024-37358
Published
Feb 6, 2025
Updated
Sep 1, 2025
Vendor
The Apache Software Foundation
Product
Apache James Server
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 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=0 <=3.7.5
  2. Affected versionversion=3.8.0 <=3.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache James Serverversion=0 <=3.7.5; version=3.8.0 <=3.8.1

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.6Apache Software FoundationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application 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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