CVE-2011-3647

The JSSubScriptLoader in Mozilla Firefox before 3.6.24 and Thunderbird before 3.1.6 does not properly handle XPCNativeWrappers during calls to the loadSubScript method in an add-on, which makes it easier for remote attackers to gain privileges via a crafted web site that leverages certain unwrapping behavior, a related issue to CVE-2011-3004.

Published: 2011-11-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-3647 is rated Moderate Risk (63.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.88%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-3647

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-24 1.98% 1.88% -0.11%
2 2026-06-15 0.77% 1.98% +1.21%
3 2025-12-14 — 0.77% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-3647

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2011-3647

OS Trackers for CVE-2011-3647

vendor priority summary link
gentoo high CVE-2011-3647: 1 GLSA(s) (201301-01), 14 atom(s) (dev-libs/nss, mail-client/mozilla-thunderbird, …); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-3647
redhat critical — https://access.redhat.com/security/cve/CVE-2011-3647
ubuntu medium CVE-2011-3647 medium priority: Ubuntu including 5 source packages (firefox, seamonkey, thunderbird, xulrunner-1.9.2, xulrunner-2.0), 50 status rows across 10 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): DNE 17, not-affected 11, ignored 9, released 8, needs-triage 5. https://ubuntu.com/security/CVE-2011-3647

Affected software / configurations for CVE-2011-3647

Vendor Product Version Raw CPE
mozilla firefox <= 3.6.23 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla firefox 0.1 cpe:2.3:a:mozilla:firefox:0.1:*:*:*:*:*:*:*
mozilla firefox 0.2 cpe:2.3:a:mozilla:firefox:0.2:*:*:*:*:*:*:*
mozilla firefox 0.3 cpe:2.3:a:mozilla:firefox:0.3:*:*:*:*:*:*:*
mozilla firefox 0.4 cpe:2.3:a:mozilla:firefox:0.4:*:*:*:*:*:*:*
mozilla firefox 0.5 cpe:2.3:a:mozilla:firefox:0.5:*:*:*:*:*:*:*
mozilla firefox 0.6 cpe:2.3:a:mozilla:firefox:0.6:*:*:*:*:*:*:*
mozilla firefox 0.6.1 cpe:2.3:a:mozilla:firefox:0.6.1:*:*:*:*:*:*:*
mozilla firefox 0.7 cpe:2.3:a:mozilla:firefox:0.7:*:*:*:*:*:*:*
mozilla firefox 0.7.1 cpe:2.3:a:mozilla:firefox:0.7.1:*:*:*:*:*:*:*
mozilla firefox 0.8 cpe:2.3:a:mozilla:firefox:0.8:*:*:*:*:*:*:*
mozilla firefox 0.9 cpe:2.3:a:mozilla:firefox:0.9:*:*:*:*:*:*:*
mozilla firefox 0.9 cpe:2.3:a:mozilla:firefox:0.9:rc:*:*:*:*:*:*
mozilla firefox 0.9.1 cpe:2.3:a:mozilla:firefox:0.9.1:*:*:*:*:*:*:*
mozilla firefox 0.9.2 cpe:2.3:a:mozilla:firefox:0.9.2:*:*:*:*:*:*:*
mozilla firefox 0.9.3 cpe:2.3:a:mozilla:firefox:0.9.3:*:*:*:*:*:*:*
mozilla firefox 0.10 cpe:2.3:a:mozilla:firefox:0.10:*:*:*:*:*:*:*
mozilla firefox 0.10.1 cpe:2.3:a:mozilla:firefox:0.10.1:*:*:*:*:*:*:*
mozilla firefox 1.0 cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*
mozilla firefox 1.0 cpe:2.3:a:mozilla:firefox:1.0:preview_release:*:*:*:*:*:*
mozilla firefox 1.0.1 cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:*
mozilla firefox 1.0.2 cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:*
mozilla firefox 1.0.3 cpe:2.3:a:mozilla:firefox:1.0.3:*:*:*:*:*:*:*
mozilla firefox 1.0.4 cpe:2.3:a:mozilla:firefox:1.0.4:*:*:*:*:*:*:*
mozilla firefox 1.0.5 cpe:2.3:a:mozilla:firefox:1.0.5:*:*:*:*:*:*:*
mozilla firefox 1.0.6 cpe:2.3:a:mozilla:firefox:1.0.6:*:*:*:*:*:*:*
mozilla firefox 1.0.7 cpe:2.3:a:mozilla:firefox:1.0.7:*:*:*:*:*:*:*
mozilla firefox 1.0.8 cpe:2.3:a:mozilla:firefox:1.0.8:*:*:*:*:*:*:*
mozilla firefox 1.4.1 cpe:2.3:a:mozilla:firefox:1.4.1:*:*:*:*:*:*:*
mozilla firefox 1.5 cpe:2.3:a:mozilla:firefox:1.5:*:*:*:*:*:*:*
mozilla firefox 1.5 cpe:2.3:a:mozilla:firefox:1.5:beta1:*:*:*:*:*:*
mozilla firefox 1.5 cpe:2.3:a:mozilla:firefox:1.5:beta2:*:*:*:*:*:*
mozilla firefox 1.5.0.1 cpe:2.3:a:mozilla:firefox:1.5.0.1:*:*:*:*:*:*:*
mozilla firefox 1.5.0.2 cpe:2.3:a:mozilla:firefox:1.5.0.2:*:*:*:*:*:*:*
mozilla firefox 1.5.0.3 cpe:2.3:a:mozilla:firefox:1.5.0.3:*:*:*:*:*:*:*
mozilla firefox 1.5.0.4 cpe:2.3:a:mozilla:firefox:1.5.0.4:*:*:*:*:*:*:*
mozilla firefox 1.5.0.5 cpe:2.3:a:mozilla:firefox:1.5.0.5:*:*:*:*:*:*:*
mozilla firefox 1.5.0.6 cpe:2.3:a:mozilla:firefox:1.5.0.6:*:*:*:*:*:*:*
mozilla firefox 1.5.0.7 cpe:2.3:a:mozilla:firefox:1.5.0.7:*:*:*:*:*:*:*
mozilla firefox 1.5.0.8 cpe:2.3:a:mozilla:firefox:1.5.0.8:*:*:*:*:*:*:*
mozilla firefox 1.5.0.9 cpe:2.3:a:mozilla:firefox:1.5.0.9:*:*:*:*:*:*:*
mozilla firefox 1.5.0.10 cpe:2.3:a:mozilla:firefox:1.5.0.10:*:*:*:*:*:*:*
mozilla firefox 1.5.0.11 cpe:2.3:a:mozilla:firefox:1.5.0.11:*:*:*:*:*:*:*
mozilla firefox 1.5.0.12 cpe:2.3:a:mozilla:firefox:1.5.0.12:*:*:*:*:*:*:*
mozilla firefox 1.5.1 cpe:2.3:a:mozilla:firefox:1.5.1:*:*:*:*:*:*:*
mozilla firefox 1.5.2 cpe:2.3:a:mozilla:firefox:1.5.2:*:*:*:*:*:*:*
mozilla firefox 1.5.3 cpe:2.3:a:mozilla:firefox:1.5.3:*:*:*:*:*:*:*
mozilla firefox 1.5.4 cpe:2.3:a:mozilla:firefox:1.5.4:*:*:*:*:*:*:*
mozilla firefox 1.5.5 cpe:2.3:a:mozilla:firefox:1.5.5:*:*:*:*:*:*:*
mozilla firefox 1.5.6 cpe:2.3:a:mozilla:firefox:1.5.6:*:*:*:*:*:*:*
mozilla firefox 1.5.7 cpe:2.3:a:mozilla:firefox:1.5.7:*:*:*:*:*:*:*
mozilla firefox 1.5.8 cpe:2.3:a:mozilla:firefox:1.5.8:*:*:*:*:*:*:*
mozilla firefox 1.8 cpe:2.3:a:mozilla:firefox:1.8:*:*:*:*:*:*:*
mozilla firefox 2.0 cpe:2.3:a:mozilla:firefox:2.0:*:*:*:*:*:*:*
mozilla firefox 2.0.0.1 cpe:2.3:a:mozilla:firefox:2.0.0.1:*:*:*:*:*:*:*
mozilla firefox 2.0.0.2 cpe:2.3:a:mozilla:firefox:2.0.0.2:*:*:*:*:*:*:*
mozilla firefox 2.0.0.3 cpe:2.3:a:mozilla:firefox:2.0.0.3:*:*:*:*:*:*:*
mozilla firefox 2.0.0.4 cpe:2.3:a:mozilla:firefox:2.0.0.4:*:*:*:*:*:*:*
mozilla firefox 2.0.0.5 cpe:2.3:a:mozilla:firefox:2.0.0.5:*:*:*:*:*:*:*
mozilla firefox 2.0.0.6 cpe:2.3:a:mozilla:firefox:2.0.0.6:*:*:*:*:*:*:*
mozilla firefox 2.0.0.7 cpe:2.3:a:mozilla:firefox:2.0.0.7:*:*:*:*:*:*:*
mozilla firefox 2.0.0.8 cpe:2.3:a:mozilla:firefox:2.0.0.8:*:*:*:*:*:*:*
mozilla firefox 2.0.0.9 cpe:2.3:a:mozilla:firefox:2.0.0.9:*:*:*:*:*:*:*
mozilla firefox 2.0.0.10 cpe:2.3:a:mozilla:firefox:2.0.0.10:*:*:*:*:*:*:*
mozilla firefox 2.0.0.11 cpe:2.3:a:mozilla:firefox:2.0.0.11:*:*:*:*:*:*:*
mozilla firefox 2.0.0.12 cpe:2.3:a:mozilla:firefox:2.0.0.12:*:*:*:*:*:*:*
mozilla firefox 2.0.0.13 cpe:2.3:a:mozilla:firefox:2.0.0.13:*:*:*:*:*:*:*
mozilla firefox 2.0.0.14 cpe:2.3:a:mozilla:firefox:2.0.0.14:*:*:*:*:*:*:*
mozilla firefox 2.0.0.15 cpe:2.3:a:mozilla:firefox:2.0.0.15:*:*:*:*:*:*:*
mozilla firefox 2.0.0.16 cpe:2.3:a:mozilla:firefox:2.0.0.16:*:*:*:*:*:*:*
mozilla firefox 2.0.0.17 cpe:2.3:a:mozilla:firefox:2.0.0.17:*:*:*:*:*:*:*
mozilla firefox 2.0.0.18 cpe:2.3:a:mozilla:firefox:2.0.0.18:*:*:*:*:*:*:*
mozilla firefox 2.0.0.19 cpe:2.3:a:mozilla:firefox:2.0.0.19:*:*:*:*:*:*:*
mozilla firefox 2.0.0.20 cpe:2.3:a:mozilla:firefox:2.0.0.20:*:*:*:*:*:*:*
mozilla firefox 3.0 cpe:2.3:a:mozilla:firefox:3.0:*:*:*:*:*:*:*
mozilla firefox 3.0.1 cpe:2.3:a:mozilla:firefox:3.0.1:*:*:*:*:*:*:*
mozilla firefox 3.0.2 cpe:2.3:a:mozilla:firefox:3.0.2:*:*:*:*:*:*:*
mozilla firefox 3.0.3 cpe:2.3:a:mozilla:firefox:3.0.3:*:*:*:*:*:*:*
mozilla firefox 3.0.4 cpe:2.3:a:mozilla:firefox:3.0.4:*:*:*:*:*:*:*
mozilla firefox 3.0.5 cpe:2.3:a:mozilla:firefox:3.0.5:*:*:*:*:*:*:*

References for CVE-2011-3647

cvelogic Threat Intelligence