Unspecified vulnerability in the QuickTime Movie Parser Filter in quartz.dll in DirectShow in Microsoft DirectX 7.0 through 9.0c on Windows
Noroxi assessment
Priority: Now (action score 80/100)
- CISA has confirmed exploitation in the wild (May 20, 2026). Remediation deadline for US federal agencies: Jun 3, 2026.
- Probability of exploitation in the next 30 days: 51.3% (FIRST EPSS); higher than 98.9% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- According to the record, no fixed version is available yet.
Patch today or shut off access. Until a fix is released, restrict access to the affected component and follow the vendor's advisory.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS
Unspecified vulnerability in the QuickTime Movie Parser Filter in quartz.dll in DirectShow in Microsoft DirectX 7.0 through 9.0c on Windows 2000 SP4, Windows XP SP2 and SP3, and Windows Server 2003 SP2 allows remote attackers to execute arbitrary code via a crafted QuickTime media file, as exploited in the wild in May 2009, aka "DirectX NULL Byte Overwrite Vulnerability."
- Published
- May 29, 2009
- Updated
- Jun 16, 2026
- EPSS
- 51.3% · 98th percentile
- CWE
- CWE-158
Report tools
Action score
80
Now
Patch today or shut off access.
- CVSS
- 35 / 40 · 8.8 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 15 / 30 · 51.3%
CISA SSVC decision
- Exploitation
- active
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on May 20, 2026. That signals real attacks, not theory.
Remediation deadline for US federal agencies: Jun 3, 2026.
Get told when this record changes
- In CISA KEV: exploitation in the wild confirmed
- Weaponized exploit exists
- No fixed version yet
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| microsoft | directx | cpe:2.3:a:microsoft:directx |
| microsoft | windows 2000 | cpe:2.3:o:microsoft:windows_2000 |
| microsoft | windows 2003 server | cpe:2.3:o:microsoft:windows_2003_server |
| microsoft | windows server 2003 | cpe:2.3:o:microsoft:windows_server_2003 |
| microsoft | windows xp | cpe:2.3:o:microsoft:windows_xp |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft windows server 2003all versions
Same product
microsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2009-1539The QuickTime Movie Parser Filter in quartz.dll in DirectShow in Microsoft DirectX 7.0 through 9.0c on Windows 2000 SP4, Windows XP SP2 and 45Plan
- CVE-2009-1538The QuickTime Movie Parser Filter in quartz.dll in DirectShow in Microsoft DirectX 7.0 through 9.0c on Windows 2000 SP4, Windows XP SP2 and 45Plan
- CVE-2012-1537Heap-based buffer overflow in DirectPlay in DirectX 9.0 through 11.1 in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows V44Plan
- CVE-2010-1880Unspecified vulnerability in Quartz.dll for DirectShow on Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista SP1, and Server43Plan
- CVE-2010-1879Unspecified vulnerability in Quartz.dll for DirectShow; Windows Media Format Runtime 9, 9.5, and 11; Media Encoder 9; and the Asycfilt.dll C43Plan
- CVE-2003-0346Multiple integer overflows in a Microsoft Windows DirectX MIDI library (QUARTZ.DLL) allow remote attackers to execute arbitrary code via a M40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- CISA KEV+6199 d
- TodayOct 17, 2026+6350 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-158 · Improper Neutralization of Null Byte or NUL CharacterCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Show all references (13 more)Show less
- blogs.technet.com/srd/archive/2009/05/28/new-vulnerability-in-quicktime-parsing.aspx
- isc.sans.org/diary.html?storyid=6481
- osvdb.org/54797
- secunia.com/advisories/35268
- www.microsoft.com/technet/security/advisory/971778.mspx
- www.securityfocus.com/bid/35139
- www.securitytracker.com/id?1022299
- www.us-cert.gov/cas/techalerts/TA09-195A.html
- www.vupen.com/english/advisories/2009/1445
- www.vupen.com/english/advisories/2009/1886
- docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-028
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6237
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-1537
Vendor advisories and official records. Exploit/PoC links are deliberately left out.