CVE-2004-2135

NONECVSS 0.0Weaponized

0.0

cryptoloop on Linux kernel 2.6.x, when used on certain file systems with a block size 1024 or greater, has certain "IV computation" weaknesses that allow watermarked files to be detected without decryption.

CVSS v3: —
EG Score: —
EPSS: 77.2%
KEV: Not listed

Published

May 26, 2004

Last Modified

April 16, 2026

References (8)

cve@mitrehttp://marc.info/?l=linux-kernel&m=107719798631935&w=2
cve@mitrehttp://mareichelt.de/pub/notmine/diskenc.pdf
cve@mitrehttp://www.securiteam.com/exploits/5UP0P1PFPM.html
cve@mitrehttp://www.securityfocus.com/bid/13775
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=linux-kernel&m=107719798631935&w=2
af854a3a-2127-422b-91ae-364da2661108http://mareichelt.de/pub/notmine/diskenc.pdf
af854a3a-2127-422b-91ae-364da2661108http://www.securiteam.com/exploits/5UP0P1PFPM.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/13775

Data Freshness Timeline

(refreshed 10× in last 7d / 17× 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.

2026-05-29 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
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

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-25707✓ verified
First seen May 26, 2005
Linux Kernel 2.6.x - Cryptoloop Information Disclosure
Open source ↗

Frequently asked(4)

What is CVE-2004-2135?

CVE-2004-2135 is a none vulnerability published on May 26, 2004. cryptoloop on Linux kernel 2.6.x, when used on certain file systems with a block size 1024 or greater, has certain "IV computation" weaknesses that allow watermarked files to be detected without decryption.

When was CVE-2004-2135 disclosed?

CVE-2004-2135 was first published in the National Vulnerability Database on May 26, 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-2004-2135 actively exploited?

CVE-2004-2135 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 77.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2004-2135?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-2135, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2004-2135

Explore →

Is Your Infrastructure Affected by CVE-2004-2135?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2004-2135

📅 Published

🔄 Last Modified

🔗 References (8)