CVE-2004-2761

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory published 2022-04-29. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 10%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

The MD5 Message-Digest Algorithm is not collision resistant, which makes it easier for context-dependent attackers to conduct spoofing attacks, as demonstrated by attacks on the use of MD5 in the signature algorithm of an X.509 certificate.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
95.1%
KEV
Not listed

Published

January 5, 2009

Last Modified

May 28, 2026

Advisory Details (8)

Auto-updated Jun 20, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet. Sources: cert.
cert

VU#836068 - MD5 vulnerable to collision attacks

http://www.kb.cert.org/vuls/id/836068
generic

Home - Par-A-Dox

http://www.doxpara.com/research/md5/md5_someday.pdf
generic
http://securitytracker.com/id?1024697
generic

MD5 Considered Harmful Today: Creating a rogue CA certificate - CXSecurity.com

http://securityreason.com/securityalert/4866
generic

About Secunia Research | Flexera

http://secunia.com/advisories/42181
generic

About Secunia Research | Flexera

http://secunia.com/advisories/34281
generic

About Secunia Research | Flexera

http://secunia.com/advisories/33826
generic🔴 Active Exploitation

MD5 Weaknesses Could Lead to Certificate Forgery - Mozilla Security Blog

http://blog.mozilla.com/security/2008/12/30/md5-weaknesses-could-lead-to-certificate-forgery/

Vendor Advisories for CVE-2004-2761(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibnss3-0d (3.11.5-3ubuntu0.7.10.2) @ gutsy2026-05-30ubuntu
redhatrhpki-util-0:7.3.0-21.el42010-11-08redhat
redhatpki-util-0:8.0.5-1.el5pki2010-11-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 2× in last 7d / 16× 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. 2026-07-18 09:59 UTCEPSS rescore
  2. 2026-07-18 09:59 UTCEPSS rescore
  3. 2026-07-15 16:53 UTCEPSS rescore
  4. 2026-07-15 01:55 UTCEPSS rescore
  5. 2026-07-15 01:55 UTCEPSS rescore
  6. 2026-07-13 22:24 UTCEPSS rescore
  7. 2026-07-11 08:22 UTCEPSS rescore
  8. 2026-07-11 08:22 UTCEPSS rescore
  9. 2026-07-08 15:09 UTCEPSS rescore
  10. 2026-07-02 14:00 UTCEPSS rescore
  11. 2026-07-01 15:01 UTCEPSS rescore
  12. 2026-06-28 04:52 UTCEPSS rescore
  13. 2026-06-27 03:04 UTCEPSS rescore
  14. 2026-06-25 13:46 UTCEPSS rescore
  15. 2026-06-24 14:01 UTCEPSS rescore
  16. 2026-06-23 21:29 UTCEPSS rescore
  17. 2026-06-22 14:22 UTCEPSS rescore
  18. 2026-06-22 14:22 UTCEPSS rescore
  19. 2026-06-21 01:56 UTCEPSS rescore
  20. 2026-06-19 19:22 UTCEPSS rescore
  21. 2026-06-18 17:49 UTCEPSS rescore
  22. 2026-06-18 17:49 UTCEPSS rescore
  23. 2026-06-17 17:49 UTCEPSS rescore
  24. 2026-06-17 17:49 UTCEPSS rescore
  25. 2026-06-16 17:49 UTCEPSS rescore
Show 44 more
  1. 2026-06-16 17:49 UTCEPSS rescore
  2. 2026-06-15 17:44 UTCEPSS rescore
  3. 2026-06-13 22:56 UTCEPSS rescore
  4. 2026-06-12 23:08 UTCEPSS rescore
  5. 2026-06-11 13:55 UTCEPSS rescore
  6. 2026-06-10 22:14 UTCEPSS rescore
  7. 2026-06-10 13:17 UTCEPSS rescore
  8. 2026-06-08 14:13 UTCEPSS rescore
  9. 2026-06-07 15:21 UTCEPSS rescore
  10. 2026-06-06 13:44 UTCEPSS rescore
  11. 2026-06-06 13:44 UTCEPSS rescore
  12. 2026-06-05 22:43 UTCEPSS rescore
  13. 2026-06-05 22:43 UTCEPSS rescore
  14. 2026-06-05 06:07 UTCEPSS rescore
  15. 2026-06-05 06:07 UTCEPSS rescore
  16. 2026-06-04 13:09 UTCEPSS rescore
  17. 2026-06-04 13:09 UTCEPSS rescore
  18. 2026-06-02 20:10 UTCEPSS rescore
  19. 2026-06-02 20:10 UTCEPSS rescore
  20. 2026-06-01 13:49 UTCEPSS rescore
  21. 2026-06-01 13:49 UTCEPSS rescore
  22. 2026-05-31 22:28 UTCEPSS rescore
  23. 2026-05-31 00:13 UTCEPSS rescore
  24. 2026-05-31 00:13 UTCEPSS rescore
  25. 2026-05-30 18:52 UTCEG score recompute
  26. 2026-05-30 18:52 UTCVendor advisory
  27. 2026-05-30 18:52 UTCGHSA enrichment
  28. 2026-05-29 13:40 UTCEPSS rescore
  29. 2026-05-29 13:40 UTCEPSS rescore
  30. 2026-05-28 13:42 UTCEPSS rescore
  31. 2026-05-28 13:42 UTCEPSS rescore
  32. 2026-05-28 13:42 UTCEPSS rescore
  33. 2026-05-27 13:37 UTCEPSS rescore
  34. 2026-05-26 13:41 UTCEPSS rescore
  35. 2026-05-26 13:41 UTCEPSS rescore
  36. 2026-05-26 07:16 UTCEPSS rescore
  37. 2026-05-26 07:16 UTCEPSS rescore
  38. 2026-05-24 16:42 UTCEPSS rescore
  39. 2026-05-21 22:38 UTCEPSS rescore
  40. 2026-05-20 22:36 UTCEPSS rescore
  41. 2026-05-20 22:36 UTCEPSS rescore
  42. 2026-05-20 11:20 UTCEPSS rescore
  43. 2026-05-20 11:20 UTCEPSS rescore
  44. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-24807✓ verified
    First seen Dec 7, 2004

    MD5 - Message Digest Algorithm Hash Collision

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2004-2761?
CVE-2004-2761 is a critical vulnerability published on January 5, 2009. The MD5 Message-Digest Algorithm is not collision resistant, which makes it easier for context-dependent attackers to conduct spoofing attacks, as demonstrated by attacks on the use of MD5 in the signature algorithm of an X.509 certificate.
When was CVE-2004-2761 disclosed?
CVE-2004-2761 was first published in the National Vulnerability Database on January 5, 2009, with the most recent update on May 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2004-2761 actively exploited?
CVE-2004-2761 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2004-2761?
CVE-2004-2761 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2004-2761?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-2761, 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

Explore the affected products and dependency analysis for CVE-2004-2761

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