CVE-2010-0255

MEDIUMCVSS v2 · 4.34.3—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.3 — 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:M/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 37.0% 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
Elevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 37%CVSS v2: 4.3Exploit: Elevated riskExposed: 0

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

Microsoft Internet Explorer 5.01 SP4, 6, 6 SP1, 7, and 8 does not prevent rendering of non-HTML local files as HTML documents, which allows remote attackers to bypass intended access restrictions and read arbitrary files via vectors involving JavaScript exploit code that constructs a reference to a file://127.0.0.1 URL, aka the dynamic OBJECT tag vulnerability, as demonstrated by obtaining the data from an index.dat file, a variant of CVE-2009-1140 and related to CVE-2008-1448.

CVSS v2.0 (legacy)
4.3MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.3(low)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity43% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
37%
EPSS %ILE
98%
KEV
Not listed

Published

February 4, 2010

Last Modified

April 29, 2026

References (24)

Data Freshness Timeline

(refreshed 2× 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. 2026-08-26 14:40 UTCEPSS rescore
  2. 2026-08-25 13:43 UTCEPSS rescore
  3. 2026-08-19 16:58 UTCEPSS rescore
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  11. 2026-08-01 04:10 UTCEPSS rescore
  12. 2026-07-30 01:26 UTCEPSS rescore
  13. 2026-07-26 13:39 UTCEG score recompute▲ 4.30
  14. 2026-07-25 14:12 UTCEPSS rescore
  15. 2026-07-23 14:14 UTCEPSS rescore
  16. 2026-07-23 01:00 UTCEG score recompute
  17. 2026-07-23 00:38 UTCEG score recompute▼ 1.20
  18. 2026-07-23 00:05 UTCEG score recompute▲ 1.20
  19. 2026-07-22 21:44 UTCEG score recompute
  20. 2026-07-22 14:03 UTCEPSS rescore
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  22. 2026-07-21 15:20 UTCEPSS rescore
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  1. 2026-07-15 16:54 UTCEPSS rescore
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  5. 2026-07-11 08:22 UTCEPSS rescore
  6. 2026-07-08 15:10 UTCEPSS rescore
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  8. 2026-07-05 02:26 UTCEPSS rescore
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  11. 2026-06-30 23:19 UTCEPSS rescore
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  17. 2026-06-25 13:46 UTCEPSS rescore
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  20. 2026-06-23 21:30 UTCEPSS rescore
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  22. 2026-06-21 14:53 UTCEPSS rescore
  23. 2026-06-21 01:56 UTCEPSS rescore
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  25. 2026-06-18 17:49 UTCEPSS rescore
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  27. 2026-06-17 17:49 UTCEPSS rescore
  28. 2026-06-17 17:49 UTCEPSS rescore
  29. 2026-06-16 17:49 UTCEPSS rescore
  30. 2026-06-15 17:44 UTCEPSS rescore
  31. 2026-06-13 22:57 UTCEPSS rescore
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  34. 2026-06-12 23:08 UTCEPSS rescore
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  36. 2026-06-11 13:56 UTCEPSS rescore
  37. 2026-06-10 22:14 UTCEPSS rescore
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  39. 2026-06-08 14:13 UTCEPSS rescore
  40. 2026-06-06 13:44 UTCEPSS rescore
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  46. 2026-06-04 13:09 UTCEPSS rescore
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  50. 2026-05-31 22:28 UTCEPSS rescore
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  52. 2026-05-31 00:14 UTCEPSS rescore
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  54. 2026-05-29 13:40 UTCEPSS rescore
  55. 2026-05-29 12:54 UTCEG score recompute
  56. 2026-05-29 12:54 UTCGHSA enrichment
  57. 2026-05-28 13:42 UTCEPSS rescore
  58. 2026-05-28 13:42 UTCEPSS rescore
  59. 2026-05-27 13:38 UTCEPSS rescore
  60. 2026-05-27 13:38 UTCEPSS rescore
  61. 2026-05-26 13:41 UTCEPSS rescore
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  63. 2026-05-26 07:16 UTCEPSS rescore
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  65. 2026-05-22 21:15 UTCEPSS rescore
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  68. 2026-05-21 22:39 UTCEPSS rescore
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  71. 2026-05-18 21:29 UTCEPSS rescore
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Frequently asked(4)

What is CVE-2010-0255?
CVE-2010-0255 is a medium vulnerability published on February 4, 2010. Microsoft Internet Explorer 5.01 SP4, 6, 6 SP1, 7, and 8 does not prevent rendering of non-HTML local files as HTML documents, which allows remote attackers to bypass intended access restrictions and read arbitrary files via vectors involving JavaScript exploit code that constructs a reference to a…
When was CVE-2010-0255 disclosed?
CVE-2010-0255 was first published in the National Vulnerability Database on February 4, 2010, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2010-0255 actively exploited?
CVE-2010-0255 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37% probability of exploitation in the next 30 days, which ranks it in the top 1.6% of all scored CVEs.
How do I remediate CVE-2010-0255?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2010-0255, 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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