CVE-2004-1561

HIGHCVSS v2 · 7.57.5—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.5 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:P/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 78.3% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
7.5EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 78%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 78%CVSS v2: 7.5Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

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

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.

CVSS v2.0 (legacy)
7.5HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.5(low)
EG Risk
70(Track)
EG Risk 70/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation78% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
78%
EPSS %ILE
100%
KEV
Not listed

Published

December 31, 2004

Last Modified

June 16, 2026

References (18)

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
icecast2—2.0.2.debian-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
icecast2—2.0.2.debian-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
icecast2—2.0.2.debian-1—

Data Freshness Timeline

(refreshed 0× in last 7d / 3× 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. 2026-09-16 01:24 UTCOSV refresh
  2. 2026-09-10 09:23 UTCEPSS rescore
  3. 2026-08-28 00:17 UTCOSV refresh
  4. 2026-08-11 14:02 UTCOSV refresh
  5. 2026-07-26 13:48 UTCOSV refresh
  6. 2026-07-26 13:24 UTCEG score recompute▲ 7.50
  7. 2026-07-25 14:11 UTCEPSS rescore
  8. 2026-07-24 14:11 UTCEPSS rescore
  9. 2026-07-23 00:46 UTCEG score recompute
  10. 2026-07-23 00:27 UTCEG score recompute▼ 7.90
  11. 2026-07-22 23:50 UTCEG score recompute▲ 7.90
  12. 2026-07-22 21:31 UTCEG score recompute
  13. 2026-07-16 16:58 UTCEPSS rescore
  14. 2026-07-09 08:15 UTCOSV refresh
  15. 2026-07-02 14:00 UTCEPSS rescore
  16. 2026-06-27 03:04 UTCEPSS rescore
  17. 2026-06-23 21:29 UTCEPSS rescore
  18. 2026-06-20 20:42 UTCOSV refresh
  19. 2026-06-17 17:49 UTCEPSS rescore
  20. 2026-06-17 17:49 UTCEPSS rescore
  21. 2026-06-16 17:49 UTCEPSS rescore
  22. 2026-06-16 17:49 UTCEPSS rescore
  23. 2026-06-15 17:43 UTCEPSS rescore
  24. 2026-06-12 23:08 UTCEPSS rescore
  25. 2026-06-11 13:55 UTCEPSS rescore
Show 25 more
  1. 2026-06-10 22:13 UTCEPSS rescore
  2. 2026-06-08 14:13 UTCEPSS rescore
  3. 2026-06-07 15:21 UTCEPSS rescore
  4. 2026-06-06 13:44 UTCEPSS rescore
  5. 2026-06-06 13:44 UTCEPSS rescore
  6. 2026-06-06 13:44 UTCEPSS rescore
  7. 2026-06-05 22:43 UTCEPSS rescore
  8. 2026-06-05 22:43 UTCEPSS rescore
  9. 2026-06-04 13:09 UTCEPSS rescore
  10. 2026-06-02 20:10 UTCEPSS rescore
  11. 2026-05-31 22:28 UTCEPSS rescore
  12. 2026-05-31 15:23 UTCEG score recompute
  13. 2026-05-31 15:23 UTCGHSA enrichment
  14. 2026-05-31 00:13 UTCEPSS rescore
  15. 2026-05-31 00:13 UTCEPSS rescore
  16. 2026-05-28 13:42 UTCEPSS rescore
  17. 2026-05-28 13:42 UTCEPSS rescore
  18. 2026-05-28 13:42 UTCEPSS rescore
  19. 2026-05-27 13:37 UTCEPSS rescore
  20. 2026-05-24 16:42 UTCEPSS rescore
  21. 2026-05-22 21:15 UTCEPSS rescore
  22. 2026-05-22 19:43 UTCOSV refresh
  23. 2026-05-20 22:36 UTCEPSS rescore
  24. 2026-05-18 21:29 UTCEPSS rescore
  25. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(6 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCthel1nus/CVE-2004-1561-Notes
    First seen May 28, 2021

    My notes for CVE-2004-1561 IceCast exploitation

    Open source ↗
  • GitHub PoCivanitlearning/CVE-2004-1561
    First seen Mar 27, 2020

    Icecast Header Overwrite buffer overflow RCE < 2.0.1 (Win32)

    Open source ↗
  • Exploit-DBEDB-16763✓ verified
    First seen Apr 30, 2010

    Icecast 2.0.1 (Windows x86) - Header Overwrite (Metasploit)

    Open source ↗
  • Exploit-DBEDB-573✓ verified
    First seen Oct 12, 2004

    Icecast 2.0.1 (Win32) - Remote Code Execution (2)

    Open source ↗
  • Exploit-DBEDB-568✓ verified
    First seen Oct 6, 2004

    Icecast 2.0.1 (Win32) - Remote Code Execution (1)

    Open source ↗
  • Metasploitexploit/windows/http/icecast_header✓ verified
    First seen Sep 28, 2004

    Icecast Header Overwrite

    Open source ↗

Related CVEs(same product)

Frequently asked(4)

What is CVE-2004-1561?
CVE-2004-1561 is a high vulnerability published on December 31, 2004. 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.
When was CVE-2004-1561 disclosed?
CVE-2004-1561 was first published in the National Vulnerability Database on December 31, 2004, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2004-1561 actively exploited?
CVE-2004-1561 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 78% probability of exploitation in the next 30 days, which ranks it in the top 0.4% of all scored CVEs.
How do I remediate CVE-2004-1561?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-1561, 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.

Dependency Blast Radius

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