CVE-2004-1561
HighPublic exploitBuffer overflow in Icecast 2.0.1 and earlier allows remote attackers to execute arbitrary code via an HTTP request with a large number of headers.
Published Dec 31, 2004 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2004-1561
Key Facts
Patch immediately- CVE-2004-1561 is a high-severity vulnerability (CVSS 7.5 v2) affecting Icecast, icecast2 (debian).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 78% probability of exploitation in the next 30 days.
- Fixed versions are available, including icecast2 2.0.2.debian-1.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
78%
Higher than 99.5% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2004-1561 brief as a PDF
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Description
Buffer overflow in Icecast 2.0.1 and earlier allows remote attackers to execute arbitrary code via an HTTP request with a large number of headers.
Affected Products
11 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| IcecastIcecast | 2.0, 2.0.1 | n/a |
| icecast2debian | See advisory | 2.0.2.debian-1 |
Patched Releases
icecast2
2.0.2.debian-1
Timeline
Publicly disclosed
Dec 31, 2004
Last updated
Aug 4, 2026
References
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2004-1561
- patch12666
- patch11271
- exploithttp://aluigi.altervista.org/adv/iceexec-adv.txt
- exploitMSF icecast_header.rb
FAQ
Common Questions.
Buffer overflow in Icecast 2.0.1 and earlier allows remote attackers to execute arbitrary code via an HTTP request with a large number of headers.
Affected: Icecast versions 2.0, 2.0.1; icecast2 (debian). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including icecast2 2.0.2.debian-1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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