CVE-2010-0255

What it is

Microsoft Internet Explorer 5.01 SP4, 6, 6 SP1, 7, and 8 does not prevent rendering of non-HTML local files as HTML documents, which allows remote attackers to bypass intended access restrictions and read arbitrary files via vectors involving JavaScript exploit code that constructs a reference to a file://127.0.0.1 URL, aka the dynamic OBJECT tag vulnerability, as demonstrated by obtaining the data from an index.dat file, a variant of CVE-2009-1140 and related to CVE-2008-1448.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

36.9% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2010-02-04 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:15 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 36.9% in the next 30 days (EPSS).
• Severity: 4.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2010-02-04 20:15 UTC

Last modified

2026-06-16 23:15 UTC

Exploit probability

36.9% · EPSS, next 30 days

Weakness

CWE-264

Record status

Modified

Affected

• Microsoft Internet Explorer 6
• Microsoft Internet Explorer 7
• Microsoft Internet Explorer 5.01
• Microsoft Internet Explorer 8

Attack profile CVSS 2.0 · 4.3

Attack vector

Network

Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2010-0255.md and follow it. Check whether this project is affected by CVE-2010-0255. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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