CVE-2024-26335Public exploitNetwork attack vector

Process crash via near-null read in state_free

Published Mar 5, 2024 · Updated Aug 29, 2024

NULL-pointer read in SWFTools 0.9.2 swfc allows remote authenticated users to crash the process via a crafted script file. During syntax-error cleanup, history_free calls state_free, which reads through an invalid near-null address at offset 0x48 and aborts under AddressSanitizer. Exploitation requires the crafted script to be supplied to swfc and processed with user interaction; the demonstrated consequence is a single-process crash.

CVSS severity5.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer read in SWFTools 0.9.2 swfc allows remote authenticated users to crash the process via a crafted script file. During syntax-error cleanup, history_free calls state_free, which reads through an invalid near-null address at offset 0x48 and aborts under AddressSanitizer. Exploitation requires the crafted script to be supplied to swfc and processed with user interaction; the demonstrated consequence is a single-process crash.

The record

CVE
CVE-2024-26335
Published
Mar 5, 2024
Updated
Aug 29, 2024
Vendor
SWFTools
Product
SWFTools
Classifications
CWE-119, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 2024Record 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=0.9.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SWFTools · SWFToolsversion=0.9.2

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1204.002User Execution: Malicious File

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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