CVE-1999-0891

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 43%CVSS: —Exploit: NoneExposed: 0

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

The "download behavior" in Internet Explorer 5 allows remote attackers to read arbitrary files via a server-side redirect.

CVSS v3
—
EG Score
0.0(none)
EPSS
98.6%
KEV
Not listed

Published

September 1, 1999

Last Modified

June 16, 2026

References (12)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 13× 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. 2026-07-22 21:25 UTCEG score recompute
  2. 2026-07-20 17:02 UTCEPSS rescore
  3. 2026-07-18 09:59 UTCEPSS rescore
  4. 2026-07-16 16:58 UTCEPSS rescore
  5. 2026-07-15 16:53 UTCEPSS rescore
  6. 2026-07-15 01:55 UTCEPSS rescore
  7. 2026-07-13 06:07 UTCEPSS rescore
  8. 2026-07-11 08:22 UTCEPSS rescore
  9. 2026-07-08 15:08 UTCEPSS rescore
  10. 2026-07-04 06:26 UTCEPSS rescore
  11. 2026-07-02 14:00 UTCEPSS rescore
  12. 2026-06-29 14:02 UTCEPSS rescore
  13. 2026-06-23 21:29 UTCEPSS rescore
  14. 2026-06-21 01:56 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. 2026-06-13 22:56 UTCEPSS rescore
  20. 2026-06-12 23:07 UTCEPSS rescore
  21. 2026-06-11 13:55 UTCEPSS rescore
  22. 2026-06-10 22:13 UTCEPSS rescore
  23. 2026-06-10 13:17 UTCEPSS rescore
  24. 2026-06-08 14:13 UTCEPSS rescore
  25. 2026-06-07 15:21 UTCEPSS rescore
Show 25 more
  1. 2026-06-06 13:44 UTCEPSS rescore
  2. 2026-06-05 06:07 UTCEPSS rescore
  3. 2026-06-02 20:10 UTCEPSS rescore
  4. 2026-06-01 13:48 UTCEPSS rescore
  5. 2026-05-31 22:18 UTCEG score recompute
  6. 2026-05-31 22:18 UTCGHSA enrichment
  7. 2026-05-31 00:13 UTCEPSS rescore
  8. 2026-05-31 00:13 UTCEPSS rescore
  9. 2026-05-29 13:40 UTCEPSS rescore
  10. 2026-05-28 13:42 UTCEPSS rescore
  11. 2026-05-28 13:42 UTCEPSS rescore
  12. 2026-05-28 13:42 UTCEPSS rescore
  13. 2026-05-28 13:42 UTCEPSS rescore
  14. 2026-05-27 13:37 UTCEPSS rescore
  15. 2026-05-27 13:37 UTCEPSS rescore
  16. 2026-05-26 07:16 UTCEPSS rescore
  17. 2026-05-26 07:16 UTCEPSS rescore
  18. 2026-05-24 16:42 UTCEPSS rescore
  19. 2026-05-22 21:15 UTCEPSS rescore
  20. 2026-05-21 22:38 UTCEPSS rescore
  21. 2026-05-20 22:36 UTCEPSS rescore
  22. 2026-05-20 11:20 UTCEPSS rescore
  23. 2026-05-20 11:20 UTCEPSS rescore
  24. 2026-05-18 21:29 UTCEPSS rescore
  25. 2026-05-18 21:29 UTCEPSS rescore

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-19530✓ verified
    First seen Sep 27, 1999

    Microsoft Internet Explorer 5 - Download Behaviour

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-1999-0891?
CVE-1999-0891 is a none vulnerability published on September 1, 1999. The "download behavior" in Internet Explorer 5 allows remote attackers to read arbitrary files via a server-side redirect.
When was CVE-1999-0891 disclosed?
CVE-1999-0891 was first published in the National Vulnerability Database on September 1, 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-1999-0891 actively exploited?
CVE-1999-0891 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-1999-0891?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0891, 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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