CVE-2011-2984

HIGHCVSS v2 · 10.010.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — v2 rates that HIGH (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:L/Au:N/C:C/I:C/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 3.6% 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
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS v2: 10.0Exploit: None knownExposed: 0

A fix is available — apply it.

Mozilla Firefox before 3.6.20, SeaMonkey 2.x, Thunderbird 3.x before 3.1.12, and possibly other products does not properly handle the dropping of a tab element, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges by establishing a content area and registering for drop events.

CVSS v2.0 (legacy)
10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
10.0(low)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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
Severity100% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
89%
KEV
Not listed

Published

August 18, 2011

Last Modified

April 29, 2026

References (20)

Vendor Advisories for CVE-2011-2984(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuxulrunner-1.9.2 (1.9.2.20+build1+nobinonly-0ubuntu0.10.10.1) @ maverick2026-05-29ubuntu
ubuntuthunderbird (3.1.12+build1+nobinonly-0ubuntu0.10.10.1) @ maverick2026-05-29ubuntu
redhatxulrunner-0:1.9.2.20-2.el6_12011-08-16redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 2 ecosystems)
Debian:6.0(3)
PackageVulnerable rangeFixed inDependents
iceape2.0.11-2, 2.0.11-3, 2.0.11-4, 2.0.11-5, 2.0.11-62.0.11-7—
icedove3.0.11-1, 3.0.11-1+squeeze1, 3.0.11-1+squeeze2, 3.0.11-1+squeeze33.0.11-1+squeeze4—
iceweasel3.5.16-4 ... 3.5.16-8~bpo50+1 (9 versions)3.5.16-9—
Debian:5.0(1)
PackageVulnerable rangeFixed inDependents
xulrunner1.9.0.10-1 ... 1.9.0.9-1 (31 versions)1.9.0.19-13—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 3× in last 7d / 9× 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 126 total refreshes for this CVE.

  1. 2026-09-20 20:08 UTCEPSS rescore
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Frequently asked(4)

What is CVE-2011-2984?
CVE-2011-2984 is a high vulnerability published on August 18, 2011. Mozilla Firefox before 3.6.20, SeaMonkey 2.x, Thunderbird 3.x before 3.1.12, and possibly other products does not properly handle the dropping of a tab element, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges by establishing a content area and registering…
When was CVE-2011-2984 disclosed?
CVE-2011-2984 was first published in the National Vulnerability Database on August 18, 2011, 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-2011-2984 actively exploited?
CVE-2011-2984 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 11.1% of all scored CVEs.
How do I remediate CVE-2011-2984?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-2984, 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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