CVE-2011-3403

NONECVSS 0.0Elevated
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 21%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Microsoft Excel 2003 SP3 and Office 2004 for Mac do not properly handle objects in memory, which allows remote attackers to execute arbitrary code via a crafted Excel spreadsheet, aka "Record Memory Corruption Vulnerability."

CVSS v3
—
EG Score
0.0(none)
EPSS
97.2%
KEV
Not listed

Published

December 14, 2011

Last Modified

April 29, 2026

References (6)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:23 UTCEPSS rescore
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  1. 2026-06-18 17:49 UTCEPSS rescore
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  25. 2026-05-31 22:28 UTCEPSS rescore
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  31. 2026-05-29 06:03 UTCEG score recompute
  32. 2026-05-29 06:03 UTCGHSA enrichment
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  50. 2026-05-20 11:21 UTCEPSS rescore
  51. 2026-05-18 21:29 UTCEPSS rescore
  52. 2026-05-18 21:29 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2011-3403?
CVE-2011-3403 is a none vulnerability published on December 14, 2011. Microsoft Excel 2003 SP3 and Office 2004 for Mac do not properly handle objects in memory, which allows remote attackers to execute arbitrary code via a crafted Excel spreadsheet, aka "Record Memory Corruption Vulnerability."
When was CVE-2011-3403 disclosed?
CVE-2011-3403 was first published in the National Vulnerability Database on December 14, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-3403 actively exploited?
CVE-2011-3403 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 97.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-3403?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-3403, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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