CVE-2009-0556

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.673 · 99 %ileEUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

67.3% (99th) EPSS

CVSS 9.3 · high

Is it mine?

5 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

added 2026-01-07remediate by 2026-01-28

required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS · scored 2026-10-27

Microsoft Office PowerPoint Code Injection Vulnerability

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."

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimary

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
microsoft office powerpoint= 2004nvdUScpe:2.3:a:microsoft:office_powerpoint:*:*:*:*:*:*:*:*
microsoft powerpoint= 2000nvdUScpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:*:*:*
microsoft powerpoint= 2002nvdUScpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:*:*:*
microsoft powerpoint= 2003nvdUScpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-04-03modified 2026-06-16

related (10,442)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-0322US	high7.2OT critical	1.74% (78th)	KEV	2026-10-14
A remote code execution (RCE) vulnerability in the management interface of Palo Alto Networks PAN-OS® software enables an authenticated attacker with network access to execute arbi…
CVE-2026-58400US	—OT critical	1.19% (68th)	—	2026-09-03
GeoNetwork is a catalog application to manage spatially referenced resources. Prior to versions 4.4.12 and 4.2.17, the Saxon XSLT processor used to render formatters is configured…
CVE-2026-60004US	—OT critical	24.0% (98th)	KEV	2026-08-26
Gitea before 1.27.1 allows remote code execution via the diffpatch API through Git hook installation.
CVE-2026-72530US	—OT critical	1.69% (77th)	KEV	2026-08-19
A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server versions 5.3.X to 5.3.9, 5.4.X to 5.4.9, 5.5.X to 5.5.5, and earlier could use a special…
CVE-2026-65660US	high8.8OT critical	8.19% (95th)	KEV	2026-08-11
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

+10437 more

references (37)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan