CVE-2007-6401Windows Media Player Memory Corruption
Stack-based buffer overflow in mplayer2.exe in Microsoft Windows Media Player (WMP) 6.4, when used with the 3ivx 4.5.1 or 5.0.1 codec, allows remote attackers to execute arbitrary code via a certain .mp4 file, possibly a related issue to CVE-2007-6402.
Published Dec 17, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-6401 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Mpeg-4 Codec (3ivx), Windows Media Player (Microsoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 30% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
30%
Higher than 98.1% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
36/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
- patch26773
Description
Stack-based buffer overflow in mplayer2.exe in Microsoft Windows Media Player (WMP) 6.4, when used with the 3ivx 4.5.1 or 5.0.1 codec, allows remote attackers to execute arbitrary code via a certain .mp4 file, possibly a related issue to CVE-2007-6402.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Mpeg-4 Codec3ivx | 4.5.1, 5.0.1 | n/a |
| Windows Media PlayerMicrosoft | 6.4 | n/a |
Timeline
Publicly disclosed
Dec 17, 2007
Last updated
Apr 22, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- patch26773
- exploitExploitDB-4702
- other3453
- other20071208 Windows media player 6.4 MP4 Stack Overflow 0-day
- other1019064
FAQ
Common Questions.
Stack-based buffer overflow in mplayer2.exe in Microsoft Windows Media Player (WMP) 6.4, when used with the 3ivx 4.5.1 or 5.0.1 codec, allows remote attackers to execute arbitrary code via a certain .mp4 file, possibly a related issue to CVE-2007-6402.
Affected: Mpeg-4 Codec (3ivx) versions 4.5.1, 5.0.1; Windows Media Player (Microsoft) versions 6.4. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2007-6401 On Your Attack Surface?
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