CVE-2024-22393Public exploitNetwork attack vector

Authenticated server crash via unbounded image dimensions

Published Feb 22, 2024 · Updated Apr 22, 2025

Resource-exhaustion DoS in Apache Answer 1.2.1 and earlier allows remote authenticated users to crash the server via an uploaded image. The content image-upload path processes attacker-controlled pixel dimensions without a documented pixel bound, causing allocation to exhaust server memory. A logged-in account with permission to post image content is required, and successful exploitation interrupts the Answer service.

CVSS severity7.1
High
EPSS probability2.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource-exhaustion DoS in Apache Answer 1.2.1 and earlier allows remote authenticated users to crash the server via an uploaded image. The content image-upload path processes attacker-controlled pixel dimensions without a documented pixel bound, causing allocation to exhaust server memory. A logged-in account with permission to post image content is required, and successful exploitation interrupts the Answer service.

The record

CVE
CVE-2024-22393
Published
Feb 22, 2024
Updated
Apr 22, 2025
Vendor
The Apache Software Foundation
Product
Apache Answer
Classifications
CWE-434, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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 <=1.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Answerversion=0 <=1.2.1

Published CVSS scores

7.1GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
9.1CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
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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