CVE-2024-22913Public exploit

Code execution via swf5lex out-of-bounds write

Published Jan 19, 2024 · Updated May 30, 2025

Heap buffer overflow in SWFTools 0.9.2 allows local users to execute code after a user compiles a crafted swfc script file. The swf5lex lexer writes one byte 295 bytes before its heap buffer while compileSWFActionCode processes attacker-controlled ActionScript. Exploitation requires a user to invoke swfc on the crafted input; the demonstrated result is memory corruption and process termination, while the CVE records code execution.

CVSS severity7.8
High
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

Heap buffer overflow in SWFTools 0.9.2 allows local users to execute code after a user compiles a crafted swfc script file. The swf5lex lexer writes one byte 295 bytes before its heap buffer while compileSWFActionCode processes attacker-controlled ActionScript. Exploitation requires a user to invoke swfc on the crafted input; the demonstrated result is memory corruption and process termination, while the CVE records code execution.

The record

CVE
CVE-2024-22913
Published
Jan 19, 2024
Updated
May 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 19, 2024CVE publishedPublication date reported by the CVE source.
  2. May 30, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/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.

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution
T1204.002Malicious 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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