Which products and versions are affected by CVE-2004-0566?

Affected: Internet Explorer (Microsoft) versions 5.0, 5.0.1, 5.0.1-sp1, 5.0.1-sp2, 5.0.1-sp3, 5.0.1-sp4, 5.5, 5.5-sp1. The full list is in the CVE brief.

Is CVE-2004-0566 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since Jul 30, 2004.

Is CVE-2004-0566 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2004-0566?

No public exploit code is known.

Is there a fix for CVE-2004-0566?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2004-0566 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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On CISA KEVHigh

CVE-2004-0566Internet Explorer Vulnerability

Integer overflow in imgbmp.cxx for Windows 2000 allows remote attackers to execute arbitrary code via a BMP image with a large bfOffBits value.

Published Jul 27, 2004 · Updated Apr 15, 2026

Key Facts

Patch immediately

CVE-2004-0566 is a high-severity vulnerability (CVSS 7.5 v2) affecting Internet Explorer (Microsoft).
It is exploited in the wild, listed in Industry KEV feed since Jul 30, 2004. No public exploit code is known.
EPSS estimates a 38% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Scores

CVSS v2

7.5

AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS (30-day exploit likelihood)

38%

Higher than 98.5% of all scored CVEs

Exploit maturity

Exploited (KEV)

ATLAS score

50/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Jul 30, 2004

3 days after publication

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Exploited (KEV)

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Advisories And Exploit References

advisoryTA04-212A

Description

Integer overflow in imgbmp.cxx for Windows 2000 allows remote attackers to execute arbitrary code via a BMP image with a large bfOffBits value.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Jul 30, 2004	n/a	Not reported

Affected Products

9 affected entries in total

Product	Affected versions	Fixed in
Internet ExplorerMicrosoft	5.0, 5.0.1, 5.0.1-sp1, 5.0.1-sp2, 5.0.1-sp3, 5.0.1-sp4, 5.5, 5.5-sp1	n/a

Timeline

Publicly disclosed
Jul 27, 2004
Added to Industry KEV feed
Jul 30, 2004
Last updated
Apr 15, 2026

References

advisoryTA04-212A
exploit20040215 GAYER THAN AIDS ADVISORY #01: IE 5 remote code execution
exploitVulnCheck exploitation report
otherMS04-025
otherie-bmp-integer-overflow(15210)

6 more references in the full CVE brief

FAQ

Common Questions.

Integer overflow in imgbmp.cxx for Windows 2000 allows remote attackers to execute arbitrary code via a BMP image with a large bfOffBits value.
Affected: Internet Explorer (Microsoft) versions 5.0, 5.0.1, 5.0.1-sp1, 5.0.1-sp2, 5.0.1-sp3, 5.0.1-sp4, 5.5, 5.5-sp1. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jul 30, 2004.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2004-0566 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.