CVE-2003-0001

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 73%
CISA-KEV: Not listedEPSS: 73%CVSS: —Exploit: NoneExposed: 0

A fix is available — apply it.

Multiple ethernet Network Interface Card (NIC) device drivers do not pad frames with null bytes, which allows remote attackers to obtain information from previous packets or kernel memory by using malformed packets, as demonstrated by Etherleak.

CVSS v3
—
EG Score
0.0(none)
EPSS
99.4%
KEV
Not listed

Published

January 17, 2003

Last Modified

June 16, 2026

References (30)

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpatch2003-06-25redhat
redhatpatch2003-03-20redhat
redhatpatch2003-02-04redhat

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(1)

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

Publicly available exploits

(4 references)

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

  • GitHub PoCmarb08/etherleak-checker
    First seen Oct 1, 2024

    This Python script helps to detect the Etherleak (CVE-2003-0001) vulnerability on a target host by analyzing the padding data in network packets. The script uses Scapy to send various types of requests (ICMP, ARP, or TCP) and checks if the responses contain any padding data that could potentially leak sensitive memory contents.

    Open source ↗
  • Exploit-DBEDB-26076
    First seen Jun 10, 2013

    Cisco ASA < 8.4.4.6 < 8.2.5.32 - Ethernet Information Leak

    Open source ↗
  • Exploit-DBEDB-22131✓ verified
    First seen Mar 23, 2007

    Linux Kernel 2.0.x/2.2.x/2.4.x (FreeBSD 4.x) - Network Device Driver Frame Padding Information Disclosure

    Open source ↗
  • Exploit-DBEDB-3555✓ verified
    First seen Mar 23, 2007

    Ethernet Device Drivers Frame Padding - 'Etherleak' Infomation Leakage

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(4)

What is CVE-2003-0001?
CVE-2003-0001 is a none vulnerability published on January 17, 2003. Multiple ethernet Network Interface Card (NIC) device drivers do not pad frames with null bytes, which allows remote attackers to obtain information from previous packets or kernel memory by using malformed packets, as demonstrated by Etherleak.
When was CVE-2003-0001 disclosed?
CVE-2003-0001 was first published in the National Vulnerability Database on January 17, 2003, 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-2003-0001 actively exploited?
CVE-2003-0001 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2003-0001?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2003-0001, 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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