CVE-2023-50628Public exploitNetwork attack vector

Process memory leak via malformed SWF parsing

Published Dec 20, 2023 · Updated Aug 27, 2024

Memory leaks in libming 0.4.8 allow attackers to consume process memory by supplying a crafted SWF file to the swftophp utility. The parser accepts an invalid SWF header, then parseSWF_DEFINETEXT and parseSWF_TEXTRECORD retain allocations instead of releasing them after the malformed structure ends. The published reproducer requires swftophp to process the file and demonstrates 1,319 leaked bytes; the linked evidence does not demonstrate code execution or information disclosure.

CVSS severity9.8
Critical
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leaks in libming 0.4.8 allow attackers to consume process memory by supplying a crafted SWF file to the swftophp utility. The parser accepts an invalid SWF header, then parseSWF_DEFINETEXT and parseSWF_TEXTRECORD retain allocations instead of releasing them after the malformed structure ends. The published reproducer requires swftophp to process the file and demonstrates 1,319 leaked bytes; the linked evidence does not demonstrate code execution or information disclosure.

The record

CVE
CVE-2023-50628
Published
Dec 20, 2023
Updated
Aug 27, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

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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