CVE-2014-1520

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

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

maintenservice_installer.exe in the Maintenance Service Installer in Mozilla Firefox before 29.0 and Firefox ESR 24.x before 24.5 on Windows allows local users to gain privileges by placing a Trojan horse DLL file into a temporary directory at an unspecified point in the update process.

CVSS v3
—
EG Score
0.0(none)
EG Risk
0
EG Risk 0/100

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. It is distinct from the 0–10 EG Score, which measures severity.

EPSS
33.3%
KEV
Not listed

Published

April 30, 2014

Last Modified

May 6, 2026

References (20)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 40× 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. 2026-07-23 01:12 UTCEG score recompute
  2. 2026-07-23 00:15 UTCEG score recompute
  3. 2026-07-22 21:54 UTCEG score recompute
  4. 2026-07-22 14:04 UTCEPSS rescore
  5. 2026-07-21 15:21 UTCEPSS rescore
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  7. 2026-07-20 17:03 UTCEPSS rescore
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  9. 2026-07-19 14:27 UTCEPSS rescore
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  11. 2026-07-19 02:25 UTCEPSS rescore
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  1. 2026-07-04 06:27 UTCEPSS rescore
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  4. 2026-06-30 23:19 UTCEPSS rescore
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  18. 2026-06-21 14:53 UTCEPSS rescore
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  21. 2026-06-19 19:23 UTCEPSS rescore
  22. 2026-06-18 17:49 UTCEPSS rescore
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  24. 2026-06-17 17:49 UTCEPSS rescore
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  26. 2026-06-16 17:49 UTCEPSS rescore
  27. 2026-06-16 17:49 UTCEPSS rescore
  28. 2026-06-16 17:49 UTCEPSS rescore
  29. 2026-06-15 17:44 UTCEPSS rescore
  30. 2026-06-14 23:14 UTCEPSS rescore
  31. 2026-06-13 22:57 UTCEPSS rescore
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  34. 2026-06-10 22:15 UTCEPSS rescore
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  36. 2026-06-08 14:14 UTCEPSS rescore
  37. 2026-06-07 15:22 UTCEPSS rescore
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  40. 2026-06-05 22:44 UTCEPSS rescore
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  44. 2026-06-04 13:09 UTCEPSS rescore
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  46. 2026-06-02 20:10 UTCEPSS rescore
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  48. 2026-06-01 13:49 UTCEPSS rescore
  49. 2026-06-01 13:49 UTCEPSS rescore
  50. 2026-05-31 22:28 UTCEPSS rescore
  51. 2026-05-31 22:28 UTCEPSS rescore
  52. 2026-05-31 00:14 UTCEPSS rescore
  53. 2026-05-31 00:14 UTCEPSS rescore
  54. 2026-05-29 13:41 UTCEPSS rescore
  55. 2026-05-29 13:41 UTCEPSS rescore
  56. 2026-05-28 19:12 UTCEG score recompute
  57. 2026-05-28 19:12 UTCGHSA enrichment
  58. 2026-05-28 13:42 UTCEPSS rescore
  59. 2026-05-28 13:42 UTCEPSS rescore
  60. 2026-05-28 13:42 UTCEPSS rescore
  61. 2026-05-27 13:38 UTCEPSS rescore
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  63. 2026-05-26 13:41 UTCEPSS rescore
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  65. 2026-05-26 07:16 UTCEPSS rescore
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  67. 2026-05-24 16:43 UTCEPSS rescore
  68. 2026-05-22 21:15 UTCEPSS rescore
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  71. 2026-05-21 22:39 UTCEPSS rescore
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  74. 2026-05-20 11:21 UTCEPSS rescore
  75. 2026-05-20 11:21 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2014-1520?
CVE-2014-1520 is a none vulnerability published on April 30, 2014. maintenservice_installer.exe in the Maintenance Service Installer in Mozilla Firefox before 29.0 and Firefox ESR 24.x before 24.5 on Windows allows local users to gain privileges by placing a Trojan horse DLL file into a temporary directory at an unspecified point in the update process.
When was CVE-2014-1520 disclosed?
CVE-2014-1520 was first published in the National Vulnerability Database on April 30, 2014, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2014-1520 actively exploited?
CVE-2014-1520 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2014-1520?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-1520, 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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