CVE-2007-3303

MEDIUMCVSS v2 · 4.94.9—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.9 — 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:L/AC:L/Au:N/C:N/I:N/A:C. 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 0.9% 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
Trending — 3 sources updated this week
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS v2: 4.9Exploit: None knownExposed: 0

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

Apache httpd 2.0.59 and 2.2.4, with the Prefork MPM module, allows local users to cause a denial of service via certain code sequences executed in a worker process that (1) stop request processing by killing all worker processes and preventing creation of replacements or (2) hang the system by forcing the master process to fork an arbitrarily large number of worker processes. NOTE: This might be an inherent design limitation of Apache with respect to worker processes in hosted environments.

CVSS v2.0 (legacy)
4.9MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.9(low)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity49% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
56%
KEV
Not listed

Published

June 20, 2007

Last Modified

April 23, 2026

References (12)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 35× 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.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-07-26 13:32 UTCEG score recompute▲ 4.90
  2. 2026-07-25 17:00 UTCOSV refresh
  3. 2026-07-25 14:12 UTCEPSS rescore
  4. 2026-07-24 14:11 UTCEPSS rescore
  5. 2026-07-23 14:13 UTCEPSS rescore
  6. 2026-07-23 00:53 UTCEG score recompute
  7. 2026-07-23 00:32 UTCEG score recompute
  8. 2026-07-22 23:58 UTCEG score recompute
  9. 2026-07-22 21:37 UTCEG score recompute
  10. 2026-07-22 14:03 UTCEPSS rescore
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  21. 2026-07-08 11:35 UTCOSV refresh
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  1. 2026-07-04 06:27 UTCEPSS rescore
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  22. 2026-06-19 23:36 UTCOSV refresh
  23. 2026-06-19 19:22 UTCEPSS rescore
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  25. 2026-06-18 17:49 UTCEPSS rescore
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  52. 2026-05-31 02:12 UTCEG score recompute
  53. 2026-05-31 02:12 UTCGHSA enrichment
  54. 2026-05-31 00:13 UTCEPSS rescore
  55. 2026-05-31 00:13 UTCEPSS rescore
  56. 2026-05-29 15:27 UTCOSV refresh
  57. 2026-05-29 13:40 UTCEPSS rescore
  58. 2026-05-28 13:42 UTCEPSS rescore
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  74. 2026-05-20 11:20 UTCEPSS rescore
  75. 2026-05-20 11:20 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2007-3303?
CVE-2007-3303 is a medium vulnerability published on June 20, 2007. Apache httpd 2.0.59 and 2.2.4, with the Prefork MPM module, allows local users to cause a denial of service via certain code sequences executed in a worker process that (1) stop request processing by killing all worker processes and preventing creation of replacements or (2) hang the system by…
When was CVE-2007-3303 disclosed?
CVE-2007-3303 was first published in the National Vulnerability Database on June 20, 2007, 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-2007-3303 actively exploited?
CVE-2007-3303 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 44.3% of all scored CVEs.
How do I remediate CVE-2007-3303?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2007-3303, 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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