CVE-2009-2043

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 4%CVSS: —Exploit: NoneExposed: 0

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

nsViewManager.cpp in Mozilla Firefox 3.0.2 through 3.0.10 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via vectors related to interaction with TinyMCE.

CVSS v3
—
EG Score
0.0(none)
EPSS
90.1%
KEV
Not listed

Published

June 12, 2009

Last Modified

April 23, 2026

References (10)

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
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  1. 2026-06-19 19:22 UTCEPSS rescore
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  34. 2026-05-30 16:30 UTCEG score recompute
  35. 2026-05-30 16:30 UTCGHSA enrichment
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  40. 2026-05-27 13:38 UTCEPSS rescore
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  44. 2026-05-26 07:16 UTCEPSS rescore
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  46. 2026-05-24 16:43 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
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  49. 2026-05-20 22:37 UTCEPSS rescore
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  51. 2026-05-20 11:21 UTCEPSS rescore
  52. 2026-05-20 11:20 UTCEPSS rescore
  53. 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-33042✓ verified
    First seen May 11, 2009

    Mozilla Firefox 3.0.10 - 'nsViewManager.cpp' Denial of Service

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2009-2043?
CVE-2009-2043 is a none vulnerability published on June 12, 2009. nsViewManager.cpp in Mozilla Firefox 3.0.2 through 3.0.10 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via vectors related to interaction with TinyMCE.
When was CVE-2009-2043 disclosed?
CVE-2009-2043 was first published in the National Vulnerability Database on June 12, 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-2009-2043 actively exploited?
CVE-2009-2043 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-2043?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-2043, 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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