CVE-1999-1510

HIGHCVSS v2 · 7.57.5—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.5 — v2 rates that HIGH (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:P/A:P. 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 67.1% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
7.5EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 67%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 67%CVSS v2: 7.5Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Buffer overflows in Bisonware FTP server prior to 4.1 allow remote attackers to cause a denial of service, and possibly execute arbitrary commands, via long (1) USER, (2) LIST, or (3) CWD commands.

CVSS v2.0 (legacy)
7.5HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.5(low)
EG Risk
65(Track)
EG Risk 65/100SSVC: Track

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
Severity75% × 45%
Exploitation67% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
67%
EPSS %ILE
99%
KEV
Not listed

Published

May 17, 1999

Last Modified

June 16, 2026

References (4)

Data Freshness Timeline

(refreshed 5× in last 7d / 12× 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. 2026-07-26 13:20 UTCEG score recompute▲ 7.50
  2. 2026-07-23 00:41 UTCEG score recompute
  3. 2026-07-23 00:24 UTCEG score recompute▼ 6.10
  4. 2026-07-22 23:46 UTCEG score recompute▲ 6.10
  5. 2026-07-22 21:26 UTCEG score recompute
  6. 2026-07-20 17:02 UTCEPSS rescore
  7. 2026-07-18 09:59 UTCEPSS rescore
  8. 2026-07-16 16:58 UTCEPSS rescore
  9. 2026-07-15 16:53 UTCEPSS rescore
  10. 2026-07-13 06:07 UTCEPSS rescore
  11. 2026-07-11 08:22 UTCEPSS rescore
  12. 2026-07-02 14:00 UTCEPSS rescore
  13. 2026-06-24 14:01 UTCEPSS rescore
  14. 2026-06-23 21:29 UTCEPSS rescore
  15. 2026-06-18 17:49 UTCEPSS rescore
  16. 2026-06-18 17:49 UTCEPSS rescore
  17. 2026-06-17 17:49 UTCEPSS rescore
  18. 2026-06-16 17:49 UTCEPSS rescore
  19. 2026-06-14 23:13 UTCEPSS rescore
  20. 2026-06-12 23:07 UTCEPSS rescore
  21. 2026-06-10 22:13 UTCEPSS rescore
  22. 2026-06-06 13:44 UTCEPSS rescore
  23. 2026-06-05 06:07 UTCEPSS rescore
  24. 2026-06-02 20:10 UTCEPSS rescore
  25. 2026-05-31 22:27 UTCGHSA enrichment
Show 14 more
  1. 2026-05-31 22:27 UTCEG score recompute
  2. 2026-05-31 22:27 UTCGHSA enrichment
  3. 2026-05-31 00:13 UTCEPSS rescore
  4. 2026-05-31 00:13 UTCEPSS rescore
  5. 2026-05-28 13:42 UTCEPSS rescore
  6. 2026-05-28 13:42 UTCEPSS rescore
  7. 2026-05-28 13:42 UTCEPSS rescore
  8. 2026-05-28 13:42 UTCEPSS rescore
  9. 2026-05-27 13:37 UTCEPSS rescore
  10. 2026-05-27 13:37 UTCEPSS rescore
  11. 2026-05-22 21:15 UTCEPSS rescore
  12. 2026-05-20 22:36 UTCEPSS rescore
  13. 2026-05-18 21:29 UTCEPSS rescore
  14. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(4 references)

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

  • Exploit-DBEDB-17810✓ verified
    First seen Sep 9, 2011

    BisonWare BisonFTP Server 3.5 - Remote Buffer Overflow (Metasploit)

    Open source ↗
  • Exploit-DBEDB-17649✓ verified
    First seen Aug 10, 2011

    BisonWare BisonFTP Server 3.5 - Remote Buffer Overflow

    Open source ↗
  • Metasploitexploit/windows/ftp/bison_ftp_bof✓ verified
    First seen Aug 7, 2011

    BisonWare BisonFTP Server Buffer Overflow

    Open source ↗
  • Exploit-DBEDB-19219✓ verified
    First seen May 17, 1999

    BisonWare BisohFTP Server 3.5 - Multiple Vulnerabilities

    Open source ↗

Frequently asked(4)

What is CVE-1999-1510?
CVE-1999-1510 is a high vulnerability published on May 17, 1999. Buffer overflows in Bisonware FTP server prior to 4.1 allow remote attackers to cause a denial of service, and possibly execute arbitrary commands, via long (1) USER, (2) LIST, or (3) CWD commands.
When was CVE-1999-1510 disclosed?
CVE-1999-1510 was first published in the National Vulnerability Database on May 17, 1999, 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-1999-1510 actively exploited?
CVE-1999-1510 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67% probability of exploitation in the next 30 days, which ranks it in the top 0.8% of all scored CVEs.
How do I remediate CVE-1999-1510?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-1510, 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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