CVE-2009-0321

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 2%CVSS: —Exploit: NoneExposed: 0

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

Apple Safari 3.2.1 (aka AppVer 3.525.27.1) on Windows allows remote attackers to cause a denial of service (infinite loop or access violation) via a link to an http URI in which the authority (aka hostname) portion is either a (1) . (dot) or (2) .. (dot dot) sequence.

CVSS v3
—
EG Score
0.0(none)
EPSS
81.7%
KEV
Not listed

Published

January 28, 2009

Last Modified

April 23, 2026

References (8)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 41× 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. 2026-07-06 16:23 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
  3. 2026-07-06 02:19 UTCEPSS rescore
  4. 2026-07-05 02:26 UTCEPSS rescore
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  17. 2026-06-24 14:02 UTCEPSS rescore
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  19. 2026-06-23 21:29 UTCEPSS rescore
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  21. 2026-06-22 14:22 UTCEPSS rescore
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  24. 2026-06-21 01:56 UTCEPSS rescore
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  1. 2026-06-19 19:22 UTCEPSS rescore
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  3. 2026-06-18 17:49 UTCEPSS rescore
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  5. 2026-06-17 17:49 UTCEPSS rescore
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  17. 2026-06-05 22:44 UTCEPSS rescore
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  19. 2026-06-05 06:07 UTCEPSS rescore
  20. 2026-06-04 13:09 UTCEPSS rescore
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  22. 2026-06-02 20:10 UTCEPSS rescore
  23. 2026-06-02 20:10 UTCEPSS rescore
  24. 2026-06-01 13:49 UTCEPSS rescore
  25. 2026-06-01 13:49 UTCEPSS rescore
  26. 2026-05-31 22:28 UTCEPSS rescore
  27. 2026-05-31 22:28 UTCEPSS rescore
  28. 2026-05-31 00:13 UTCEPSS rescore
  29. 2026-05-31 00:13 UTCEPSS rescore
  30. 2026-05-30 18:33 UTCEG score recompute
  31. 2026-05-30 18:33 UTCGHSA enrichment
  32. 2026-05-29 13:40 UTCEPSS rescore
  33. 2026-05-28 13:42 UTCEPSS rescore
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  36. 2026-05-27 13:38 UTCEPSS rescore
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  38. 2026-05-26 13:41 UTCEPSS rescore
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  40. 2026-05-26 07:16 UTCEPSS rescore
  41. 2026-05-26 07:16 UTCEPSS rescore
  42. 2026-05-24 16:43 UTCEPSS rescore
  43. 2026-05-22 21:15 UTCEPSS rescore
  44. 2026-05-22 21:15 UTCEPSS rescore
  45. 2026-05-20 22:37 UTCEPSS rescore
  46. 2026-05-20 22:37 UTCEPSS rescore
  47. 2026-05-20 11:21 UTCEPSS rescore
  48. 2026-05-20 11:20 UTCEPSS rescore
  49. 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-32761✓ verified
    First seen Jan 27, 2009

    Apple Safari For Windows 3.2.1 - URI Remote Denial of Service

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2009-0321?
CVE-2009-0321 is a none vulnerability published on January 28, 2009. Apple Safari 3.2.1 (aka AppVer 3.525.27.1) on Windows allows remote attackers to cause a denial of service (infinite loop or access violation) via a link to an http URI in which the authority (aka hostname) portion is either a (1) . (dot) or (2) .. (dot dot) sequence.
When was CVE-2009-0321 disclosed?
CVE-2009-0321 was first published in the National Vulnerability Database on January 28, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-0321 actively exploited?
CVE-2009-0321 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-0321?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-0321, 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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