CVE-2009-0556

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-01-07. Federal remediation due 2026-01-28.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

67.54% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 99.2% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2009-04-03 18:00Z17 YR AGO

Last updated

2026-01-08 04:55Z7 MO AGO

Reserved

2009-02-12

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.2

Document digest

6d55b67c786c13aff218cfa03e19bb7a5079b0059aa647fa3a1506fd9ac83c9c

• www.zerodayinitiative.comhttp://www.zerodayinitiative.com/advisories/ZDI-09-019x_refsource_MISC
• blogs.technet.comhttp://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspxx_refsource_CONFIRM
• www.vupen.comADV-2009-1290http://www.vupen.com/english/advisories/2009/1290vdb-entryx_refsource_VUPEN
• osvdb.org53182http://osvdb.org/53182vdb-entryx_refsource_OSVDB
• docs.microsoft.comMS09-017https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017vendor-advisoryx_refsource_MS
• exchange.xforce.ibmcloud.compowerpoint-unspecified-code-execution(49632)https://exchange.xforce.ibmcloud.com/vulnerabilities/49632vdb-entryx_refsource_XF
• www.securityfocus.com34351http://www.securityfocus.com/bid/34351vdb-entryx_refsource_BID
• www.vupen.comADV-2009-0915http://www.vupen.com/english/advisories/2009/0915vdb-entryx_refsource_VUPEN
• blogs.technet.comhttp://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspxx_refsource_CONFIRM
• blogs.technet.comhttp://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspxx_refsource_CONFIRM
• oval.cisecurity.orgoval:org.mitre.oval:def:6279https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6279vdb-entrysignaturex_refsource_OVAL
• secunia.com34572http://secunia.com/advisories/34572third-party-advisoryx_refsource_SECUNIA
• www.securitytracker.com1021967http://www.securitytracker.com/id?1021967vdb-entryx_refsource_SECTRACK
• www.us-cert.govTA09-132Ahttp://www.us-cert.gov/cas/techalerts/TA09-132A.htmlthird-party-advisoryx_refsource_CERT
• www.microsoft.comhttp://www.microsoft.com/technet/security/advisory/969136.mspxx_refsource_CONFIRM
• www.kb.cert.orgVU#627331http://www.kb.cert.org/vuls/id/627331third-party-advisoryx_refsource_CERT-VN
• www.securityfocus.com20090512 ZDI-09-019: Microsoft Office PowerPoint OutlineTextRefAtom Parsing Memory Corruption Vulnerabilityhttp://www.securityfocus.com/archive/1/503453/100/0/threadedmailing-listx_refsource_BUGTRAQ
• oval.cisecurity.orgoval:org.mitre.oval:def:6204https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6204vdb-entrysignaturex_refsource_OVAL
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0556government-resource