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CVE-2009-0556· NVD / CVE Program· CNA microsoft

Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003 SP3, and PowerPoint in Microsoft Office 2004 for Mac, allows remote attackers to ex

Noroxi assessment

Priority: Now (action score 85/100)

  • CISA has confirmed exploitation in the wild (Jan 7, 2026). Remediation deadline for US federal agencies: Jan 28, 2026.
  • Probability of exploitation in the next 30 days: 67.3% (FIRST EPSS); higher than 99.2% 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

Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003 SP3, and PowerPoint in Microsoft Office 2004 for Mac, allows remote attackers to execute arbitrary code via a PowerPoint file with an OutlineTextRefAtom containing an an invalid index value that triggers memory corruption, as exploited in the wild in April 2009 by Exploit:Win32/Apptom.gen, aka "Memory Corruption Vulnerability."

HighCVSS 8.8 · v3.1KEVWeaponized No fix recorded
Published
Apr 3, 2009
Updated
Jun 16, 2026
EPSS
67.3% · 99th percentile

Report tools

JSON

Action score

85

Now

Patch today or shut off access.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
20 / 30 · 67.3%

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 Jan 7, 2026. That signals real attacks, not theory.

Remediation deadline for government agencies: Jan 28, 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.

Follow CVE-2009-0556

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

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Affected 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.

VendorProduct
microsoftoffice powerpoint
microsoftpowerpoint

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft office powerpoint2004
  • microsoft powerpoint2000
  • microsoft powerpoint2002
  • microsoft powerpoint2003

Other highest-scoring records for the same primary product.

  • CVE-2009-1131Multiple stack-based buffer overflows in Microsoft Office PowerPoint 2000 SP3 allow remote attackers to execute arbitrary code via a large a
    48Plan
  • CVE-2009-1129Multiple stack-based buffer overflows in the PowerPoint 95 importer (PP7X32.DLL) in Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003
    48Plan
  • CVE-2009-0227Stack-based buffer overflow in the PowerPoint 4.2 conversion filter (PP4X32.DLL) in Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003
    48Plan
  • CVE-2009-0221Integer overflow in Microsoft Office PowerPoint 2002 SP3 and 2003 SP3 allows remote attackers to execute arbitrary code via a PowerPoint fil
    48Plan
  • CVE-2009-0220Multiple stack-based buffer overflows in the PowerPoint 4.0 importer (PP4X32.DLL) in Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 200
    48Plan
  • CVE-2009-0226Stack-based buffer overflow in the PowerPoint 4.2 conversion filter in Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003 SP3 allows r
    47Plan

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.

  1. Published
  2. CISA KEV+6122 d
  3. TodayOct 14, 2026+6403 d
EPSS, last 120 days

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.

Finders, 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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-secondary

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

All records