CVE-2011-1273

Exploitation likely. EPSS gives it a 17% chance of exploitation in the next 30 days. No fix published yet.

CVSS 2.09.3Critical EPSS percentile97th17% chance in 30 days CISA KEVNot listedNo confirmed exploitation
No public exploit known FixNone yetNo fix or workaround published

Published 2011-06-16Updated 2026-04-29Sources: CVE.org, NVD

NVD CVE.org

What to do

No fixed build or workaround is published yet. Limit exposure and watch for a patch.

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

Microsoft Excel 2002 SP3, 2003 SP3, 2007 SP2, and 2010; Office 2004, 2008, and 2011 for Mac; Open XML File Format Converter for Mac; Excel Viewer SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2 do not properly validate record information during parsing of Excel spreadsheets, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted spreadsheet, aka "Excel Improper Record Parsing Vulnerability."

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS97th

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

17% chance of exploitation activity in the next 30 days, which ranks it in the 97th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

6 events over 5488 days, from the signal feeds we watch.

2026-06-25OpenVAS check added
2026-06-22EPSS band changehigh → moderate
2026-04-29Record updated
2011-06-16Publishedweakness classified, att&ck mapped

Affected products

microsoftcommercial · US
- excelDesktop AppConsumer Software / productivity
- excel viewerLibraryLibraryOSS Libraries / generic-library
- officeDesktop AppConsumer Software / productivity
- office compatibility packDesktop AppOn-premConsumer Software / productivity
- open xml file format converterDesktop AppOn-premOperating Systems / windows

And 1 more affected product. See all after sign-in

Technical detail

CVSS 2.0 vector

Open in the CVSS calculator

AV:N/AC:M/Au:N/C:C/I:C/A:C

Scored 9.3 by NVD.

How it is reached

Access Vector NetworkExploitable remotely over the network
Access Complexity MediumSome conditions must be met
Authentication NoneNo authentication required

Impact if exploited

Confidentiality CompleteAll information is disclosed
Integrity CompleteAll data can be modified
Availability CompleteTotal shutdown of the affected resource

Weaknesses

CWE-119No name in the record

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Initial AccessT1190Exploit Public-Facing Applicationhigh confidence
Privilege EscalationT1068Exploitation for Privilege Escalationhigh confidence

Sources

References in the record

And 1 more reference. See all after sign-in

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