CVE-2011-1986 Use after free in n/a

What is CVE-2011-1986?

CVE-2011-1986 is a critical use after free vulnerability in Microsoft Excel, published on 15 Sep 2011. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Use-after-free vulnerability in Microsoft Excel 2003 SP3 allows remote attackers to execute arbitrary code via a crafted spreadsheet, aka "Excel Use after Free WriteAV Vulnerability."

Weakness: CWE-399

Which versions are affected by CVE-2011-1986?

It affects 1 product.

Products include Microsoft Excel.

How do I fix CVE-2011-1986?

No fix has been published for CVE-2011-1986 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2011-1986 being exploited?

There is no known exploitation of CVE-2011-1986 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Excel

• CVE-2019-1297 Microsoft Excel Remote Code Execution Exploited High 8.8
• CVE-2009-0238 Microsoft Office Remote Code Execution Exploited High 8.8
• CVE-2016-7262 Microsoft Office Security Feature Bypass Exploited High 7.8
• CVE-2009-3129 Microsoft Excel Featheader Record Memory Corruption Exploited High 7.8
• CVE-2008-0081 Code injection in n/a Critical 9.8

All Microsoft Excel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5vcj-p7q3-w74j.