CVE-2004-1901

MEDIUMNVD 5.55.5—Trending — 3 sources updated this week

5.5

Portage before 2.0.50-r3 allows local users to overwrite arbitrary files via a hard link attack on the lockfiles.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 27.3%
KEV: Not listed

Published

December 31, 2004

Last Modified

April 16, 2026

References (8)

cve@mitrehttp://secunia.com/advisories/11305
cve@mitrehttp://security.gentoo.org/glsa/glsa-200404-01.xml
cve@mitrehttp://www.securityfocus.com/bid/10060
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/15754
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/11305
af854a3a-2127-422b-91ae-364da2661108http://security.gentoo.org/glsa/glsa-200404-01.xml
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/10060
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/15754

Weakness Classification(1)

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

CWE-59Improper Link Resolution Before File Access (Link Following)

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 14:39 UTCEG score recompute
2026-05-31 14:39 UTCGHSA enrichment
2026-05-29 13:40 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch

Frequently asked(5)

What is CVE-2004-1901?

CVE-2004-1901 is a medium vulnerability published on December 31, 2004. Portage before 2.0.50-r3 allows local users to overwrite arbitrary files via a hard link attack on the lockfiles.

When was CVE-2004-1901 disclosed?

CVE-2004-1901 was first published in the National Vulnerability Database on December 31, 2004, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2004-1901 actively exploited?

CVE-2004-1901 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2004-1901?

CVE-2004-1901 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2004-1901?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-1901, 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.

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CVE-2004-1901

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2004-1901?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (8)

Frequently asked(5)

Related CVEs(same CWE)