CVE-2023-27249Public exploit

Crash via unterminated PlaceObject string length read

Published Mar 23, 2023 · Updated Jul 9, 2026

Heap buffer overflow in SWFTools swfdump 0.9.2 allows local users to crash the utility by processing a crafted SWF file. The swf_GetPlaceObject function at modules/swfobject.c:195 calls strlen on unterminated file-derived heap data, causing an out-of-bounds read. Exploitation requires user interaction to process the file, and the demonstrated consequence is process termination without data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.37%
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 swfdump 0.9.2 allows local users to crash the utility by processing a crafted SWF file. The swf_GetPlaceObject function at modules/swfobject.c:195 calls strlen on unterminated file-derived heap data, causing an out-of-bounds read. Exploitation requires user interaction to process the file, and the demonstrated consequence is process termination without data disclosure or modification.

The record

CVE
CVE-2023-27249
Published
Mar 23, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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

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

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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