CVE-2004-1602

MEDIUMCVSS v2 · 5.05.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (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:N/A:N. 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 30.7% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Triggered by: NVD CVSS v2.0 (legacy fallback)
Sources: epss, nvd_v2
Weaponized
5.0EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Public exploit code is available (Exploit-DB, marked verified by Exploit-DB)
CISA-KEV: Not listedEPSS PROB: 31%CVSS v2: 5.0Exploit: Exploit-DB (verified)Exposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

ProFTPD 1.2.x, including 1.2.8 and 1.2.10, responds in a different amount of time when a given username exists, which allows remote attackers to identify valid usernames by timing the server response.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0MEDIUMlow confidence
EG Risk
53
EG Risk 53/100

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 (value × EchelonGraph’s weight)
Severity50% × 45%
The EG Score, 5.0 of 10.
Exploitation65% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): a constant, not a probability.
Automatability30% × 15%
EchelonGraph's default before algorithm v3.4: CISA had not published Automatable for this CVE.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track or Track* at medium and Track* or Attend at high mission impact.
Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
31%
EPSS %ILE
98th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track or Track* at medium and Track* or Attend at high mission impact.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

Published

October 15, 2004

Last Modified

June 16, 2026

References (5)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 10× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 19 repeat rows among the latest 81 are merged into the row they repeat.

  1. 2026-10-11 13:37 UTCEPSS rescoreEPSS 31% · 98th percentile
  2. 2026-10-10 19:53 UTCEPSS rescoreEPSS 31% · 98th percentile
  3. 2026-10-09 19:58 UTCEPSS rescoreEPSS 31% · 98th percentile
  4. 2026-10-08 16:28 UTCEPSS rescoreEPSS 31% · 98th percentile
  5. 2026-10-07 23:35 UTCEPSS rescoreEPSS 31% · 98th percentile
  6. 2026-10-06 15:08 UTCEPSS rescoreEPSS 31% · 98th percentile
  7. 2026-10-05 17:36 UTCEPSS rescoreEPSS 31% · 98th percentile
  8. 2026-10-03 14:19 UTCEPSS rescoreEPSS 31% · 98th percentile
  9. 2026-09-29 02:41 UTCEG score recompute
  10. 2026-09-12 14:54 UTCEPSS rescoreEPSS 31% · 98th percentile
  11. 2026-09-10 09:23 UTCEPSS rescoreEPSS 31% · 98th percentile
  12. 2026-08-30 01:13 UTCEPSS rescoreEPSS 31% · 98th percentile
  13. 2026-07-26 13:24 UTCEG score recompute▲ 5.00
  14. 2026-07-25 14:11 UTCEPSS rescoreEPSS 31% · 98th percentile
  15. 2026-07-24 14:11 UTCEPSS rescoreEPSS 31% · 98th percentile
  16. 2026-07-23 00:46 UTCEG score recompute
  17. 2026-07-23 00:27 UTCEG score recompute▼ 0.10
  18. 2026-07-22 23:50 UTCEG score recompute▲ 0.10
  19. 2026-07-22 21:31 UTCEG score recompute
  20. 2026-07-20 17:02 UTCEPSS rescoreEPSS 31% · 98th percentile
  21. 2026-07-18 09:59 UTCEPSS rescoreEPSS 31% · 98th percentile
  22. 2026-07-16 16:58 UTCEPSS rescoreEPSS 31% · 98th percentile
  23. 2026-07-11 08:22 UTCEPSS rescoreEPSS 31% · 98th percentile
  24. 2026-07-08 15:09 UTCEPSS rescoreEPSS 31% · 98th percentile
  25. 2026-07-04 06:26 UTCEPSS rescoreEPSS 31% · 98th percentile
Show 37 more
  1. 2026-07-02 14:00 UTCEPSS rescoreEPSS 31% · 98th percentile
  2. 2026-06-29 14:02 UTCEPSS rescoreEPSS 31% · 98th percentile
  3. 2026-06-28 14:02 UTCEPSS rescoreEPSS 31% · 98th percentile
  4. 2026-06-28 04:52 UTCEPSS rescoreEPSS 31% · 98th percentile
  5. 2026-06-27 03:04 UTCEPSS rescoreEPSS 31% · 98th percentile
  6. 2026-06-23 21:29 UTCEPSS rescoreEPSS 31% · 98th percentile
  7. 2026-06-21 01:56 UTCEPSS rescoreEPSS 31% · 98th percentile
  8. 2026-06-19 19:22 UTCEPSS rescoreEPSS 31% · 98th percentile
  9. 2026-06-18 17:49 UTCEPSS rescoreEPSS 31% · 98th percentile
  10. 2026-06-17 17:49 UTCEPSS rescoreEPSS 31% · 98th percentile
  11. 2026-06-16 17:49 UTCEPSS rescoreEPSS 31% · 98th percentile
  12. 2026-06-15 17:43 UTCEPSS rescoreEPSS 31% · 98th percentile
  13. 2026-06-14 23:13 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  14. 2026-06-13 22:56 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  15. 2026-06-12 23:08 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  16. 2026-06-11 13:55 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  17. 2026-06-10 22:13 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  18. 2026-06-10 13:17 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  19. 2026-06-08 14:13 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  20. 2026-06-07 15:21 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  21. 2026-06-06 13:44 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  22. 2026-06-05 22:43 UTCEPSS rescoreEPSS 0.8% · 74th percentile
  23. 2026-06-05 06:07 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  24. 2026-06-04 13:09 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  25. 2026-06-02 20:10 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  26. 2026-06-01 13:49 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  27. 2026-05-31 22:28 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  28. 2026-05-31 15:52 UTCEG score recompute
  29. 2026-05-31 15:52 UTCGHSA enrichmentGHSA-9qc2-2rhf-vf42
  30. 2026-05-31 00:13 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  31. 2026-05-29 13:40 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  32. 2026-05-28 13:42 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  33. 2026-05-27 13:37 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  34. 2026-05-26 13:41 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  35. 2026-05-22 21:15 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  36. 2026-05-20 11:20 UTCEPSS rescoreEPSS 0.8% · 73rd percentile
  37. 2026-05-18 21:29 UTCEPSS rescoreEPSS 0.8% · 73rd percentile

Publicly available exploits

(2 references)

Public exploit code is referenced for this CVE (1 Exploit-DB entry), as is 1 Nuclei detection template. A detection template checks whether a system is affected; it is not necessarily exploit code. No release with the fix is confirmed, so defenders should restrict or isolate affected systems accordingly until one is applied.

  • Exploit-DBEDB-581✓ verified
    Published Oct 17, 2004

    ProFTPd 1.2.10 - Remote Users Enumeration

    Open source ↗
  • Nucleinetwork/cves/2004/CVE-2004-1602.yaml
    Published Oct 7, 2025

    ProFTPD 1.2.x - Username Enumeration via Timing Attack

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2004-1602?
CVE-2004-1602 is a medium-severity vulnerability; its CVE record was published on October 15, 2004. ProFTPD 1.2.x, including 1.2.8 and 1.2.10, responds in a different amount of time when a given username exists, which allows remote attackers to identify valid usernames by timing the server response.
When was CVE-2004-1602 made public?
CVE-2004-1602 was made public on October 15, 2004: that is the date its CVE record's CNA, MITRE Corporation, gives for when the vulnerability was made public. The CVE record itself was published on October 15, 2004. EchelonGraph's copy of the record carries a last-modified date of June 16, 2026; the record at its source may have been updated since.
Is CVE-2004-1602 actively exploited?
CVE-2004-1602 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: Exploit-DB marks a public exploit for it as verified. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 31% probability of exploitation in the next 30 days (98th percentile of EPSS-scored CVEs).
How do I remediate CVE-2004-1602?
A fix for CVE-2004-1602 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

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