CVE-2000-0649

LOWCVSS v2 · 2.62.6—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 2.6 — v2 rates that LOW (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:H/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 76.6% 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
2.6EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • 18 internet-exposed hosts are running an affected version right now
  • High exploitation likelihood — EPSS 79%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 79%CVSS v2: 2.6Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 18

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

IIS 4.0 allows remote attackers to obtain the internal IP address of the server via an HTTP 1.0 request for a web page which is protected by basic authentication and has no realm defined.

Live · internet exposure

18 internet-exposed hosts are running an affected version of CVE-2000-0649 right now.

across 8 countries (Canada, United States, Korea, Republic of, Japan, Bulgaria)top: internet_information_services
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v2.0 (legacy)
2.6LOWNVD never assigned a CVSS v3 rating to this CVE
EG Score
2.6(low)
EG Risk
47(Track)
EG Risk 47/100SSVC: 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
Severity26% × 45%
Exploitation77% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
79%
EPSS %ILE
100%
KEV
Not listed

Published

July 13, 2000

Last Modified

June 16, 2026

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 10× 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▲ 2.60
  2. 2026-07-23 00:42 UTCEG score recompute
  3. 2026-07-23 00:24 UTCEG score recompute▼ 7.60
  4. 2026-07-22 23:47 UTCEG score recompute▲ 7.60
  5. 2026-07-22 21:27 UTCEG score recompute
  6. 2026-07-20 17:02 UTCEPSS rescore
  7. 2026-07-15 16:53 UTCEPSS rescore
  8. 2026-07-15 01:55 UTCEPSS rescore
  9. 2026-07-11 08:22 UTCEPSS rescore
  10. 2026-06-28 14:02 UTCEPSS rescore
  11. 2026-06-27 03:04 UTCEPSS rescore
  12. 2026-06-24 14:01 UTCEPSS rescore
  13. 2026-06-23 21:29 UTCEPSS rescore
  14. 2026-06-22 14:22 UTCEPSS rescore
  15. 2026-06-21 01:56 UTCEPSS rescore
  16. 2026-06-17 17:49 UTCEPSS rescore
  17. 2026-06-16 17:49 UTCEPSS rescore
  18. 2026-06-13 22:56 UTCEPSS rescore
  19. 2026-06-12 23:07 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. 2026-06-08 14:13 UTCEPSS rescore
  24. 2026-06-06 13:44 UTCEPSS rescore
  25. 2026-06-05 06:07 UTCEPSS rescore
Show 16 more
  1. 2026-06-04 13:09 UTCEPSS rescore
  2. 2026-06-02 20:10 UTCEPSS rescore
  3. 2026-06-01 13:48 UTCEPSS rescore
  4. 2026-05-31 21:30 UTCEG score recompute
  5. 2026-05-31 21:30 UTCGHSA enrichment
  6. 2026-05-29 13:40 UTCEPSS rescore
  7. 2026-05-28 13:42 UTCEPSS rescore
  8. 2026-05-28 13:42 UTCEPSS rescore
  9. 2026-05-28 13:42 UTCEPSS rescore
  10. 2026-05-28 13:42 UTCEPSS rescore
  11. 2026-05-27 13:37 UTCEPSS rescore
  12. 2026-05-27 13:37 UTCEPSS rescore
  13. 2026-05-22 21:15 UTCEPSS rescore
  14. 2026-05-20 22:36 UTCEPSS rescore
  15. 2026-05-18 21:29 UTCEPSS rescore
  16. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(3 references)

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

  • GitHub PoCrafaelh/CVE-2000-0649
    First seen Feb 11, 2021

    Test for CVE-2000-0649, and return an IP address if vulnerable

    Open source ↗
  • Exploit-DBEDB-20096✓ verified
    First seen Jul 13, 2000

    Microsoft IIS 2.0/3.0/4.0/5.0/5.1 - Internal IP Address Disclosure

    Open source ↗
  • Metasploitauxiliary/scanner/http/iis_internal_ip✓ verified
    First seen Jan 1, 2000

    Microsoft IIS HTTP Internal IP Disclosure

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2000-0649?
CVE-2000-0649 is a low vulnerability published on July 13, 2000. IIS 4.0 allows remote attackers to obtain the internal IP address of the server via an HTTP 1.0 request for a web page which is protected by basic authentication and has no realm defined.
When was CVE-2000-0649 disclosed?
CVE-2000-0649 was first published in the National Vulnerability Database on July 13, 2000, 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-2000-0649 actively exploited?
CVE-2000-0649 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79% probability of exploitation in the next 30 days, which ranks it in the top 0.5% of all scored CVEs.
How do I remediate CVE-2000-0649?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2000-0649, 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

Explore the affected products and dependency analysis for CVE-2000-0649

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