CVE-2020-6629Public exploitNetwork attack vector

Process crash via crafted SWF GETURL2 action

Published Jan 9, 2020 · Updated Aug 4, 2024

NULL pointer dereference in Ming 0.4.8 allows context-dependent attackers to crash swftophp via a crafted SWF file. In decompileGETURL2() in util/decompile.c, processing the malformed action reads through a null operand pointer at line 924. Exploitation requires a user or workflow to process the file with swftophp, terminating that process without reported confidentiality or integrity impact.

CVSS severity6.5
Medium
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Ming 0.4.8 allows context-dependent attackers to crash swftophp via a crafted SWF file. In decompileGETURL2() in util/decompile.c, processing the malformed action reads through a null operand pointer at line 924. Exploitation requires a user or workflow to process the file with swftophp, terminating that process without reported confidentiality or integrity impact.

The record

CVE
CVE-2020-6629
Published
Jan 9, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 9, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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