CVE-2011-4685

Dragonfly in Opera before 11.60 allows remote attackers to cause a denial of service (application crash) via unspecified content on a web page, as demonstrated by forbes.com.

Published: 2011-12-07 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4685 is rated Moderate Risk (42.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.49%). 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-2011-4685

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 2025-12-07 0.86% 0.49% -0.37%
2 2025-03-30 0.75% 0.86% +0.11%
3 2025-03-29 — 0.75% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4685

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-4685

Affected software / configurations for CVE-2011-4685

Vendor Product Version Raw CPE
opera opera_browser <= 11.60 cpe:2.3:a:opera:opera_browser:*:beta:*:*:*:*:*:*
opera opera_browser 5.0 cpe:2.3:a:opera:opera_browser:5.0:*:*:*:*:*:*:*
opera opera_browser 5.0 cpe:2.3:a:opera:opera_browser:5.0:beta2:*:*:*:*:*:*
opera opera_browser 5.0 cpe:2.3:a:opera:opera_browser:5.0:beta3:*:*:*:*:*:*
opera opera_browser 5.0 cpe:2.3:a:opera:opera_browser:5.0:beta4:*:*:*:*:*:*
opera opera_browser 5.0 cpe:2.3:a:opera:opera_browser:5.0:beta5:*:*:*:*:*:*
opera opera_browser 5.0 cpe:2.3:a:opera:opera_browser:5.0:beta6:*:*:*:*:*:*
opera opera_browser 5.0 cpe:2.3:a:opera:opera_browser:5.0:beta7:*:*:*:*:*:*
opera opera_browser 5.0 cpe:2.3:a:opera:opera_browser:5.0:beta8:*:*:*:*:*:*
opera opera_browser 5.02 cpe:2.3:a:opera:opera_browser:5.02:*:*:*:*:*:*:*
opera opera_browser 5.10 cpe:2.3:a:opera:opera_browser:5.10:*:*:*:*:*:*:*
opera opera_browser 5.11 cpe:2.3:a:opera:opera_browser:5.11:*:*:*:*:*:*:*
opera opera_browser 5.12 cpe:2.3:a:opera:opera_browser:5.12:*:*:*:*:*:*:*
opera opera_browser 6.0 cpe:2.3:a:opera:opera_browser:6.0:*:*:*:*:*:*:*
opera opera_browser 6.0 cpe:2.3:a:opera:opera_browser:6.0:beta1:*:*:*:*:*:*
opera opera_browser 6.0 cpe:2.3:a:opera:opera_browser:6.0:beta2:*:*:*:*:*:*
opera opera_browser 6.0 cpe:2.3:a:opera:opera_browser:6.0:tp1:*:*:*:*:*:*
opera opera_browser 6.0 cpe:2.3:a:opera:opera_browser:6.0:tp2:*:*:*:*:*:*
opera opera_browser 6.0 cpe:2.3:a:opera:opera_browser:6.0:tp3:*:*:*:*:*:*
opera opera_browser 6.1 cpe:2.3:a:opera:opera_browser:6.1:*:*:*:*:*:*:*
opera opera_browser 6.01 cpe:2.3:a:opera:opera_browser:6.01:*:*:*:*:*:*:*
opera opera_browser 6.1 cpe:2.3:a:opera:opera_browser:6.1:beta1:*:*:*:*:*:*
opera opera_browser 6.02 cpe:2.3:a:opera:opera_browser:6.02:*:*:*:*:*:*:*
opera opera_browser 6.03 cpe:2.3:a:opera:opera_browser:6.03:*:*:*:*:*:*:*
opera opera_browser 6.04 cpe:2.3:a:opera:opera_browser:6.04:*:*:*:*:*:*:*
opera opera_browser 6.05 cpe:2.3:a:opera:opera_browser:6.05:*:*:*:*:*:*:*
opera opera_browser 6.06 cpe:2.3:a:opera:opera_browser:6.06:*:*:*:*:*:*:*
opera opera_browser 6.11 cpe:2.3:a:opera:opera_browser:6.11:*:*:*:*:*:*:*
opera opera_browser 6.12 cpe:2.3:a:opera:opera_browser:6.12:*:*:*:*:*:*:*
opera opera_browser 7.0 cpe:2.3:a:opera:opera_browser:7.0:*:*:*:*:*:*:*
opera opera_browser 7.0 cpe:2.3:a:opera:opera_browser:7.0:beta1:*:*:*:*:*:*
opera opera_browser 7.0 cpe:2.3:a:opera:opera_browser:7.0:beta1_v2:*:*:*:*:*:*
opera opera_browser 7.0 cpe:2.3:a:opera:opera_browser:7.0:beta2:*:*:*:*:*:*
opera opera_browser 7.01 cpe:2.3:a:opera:opera_browser:7.01:*:*:*:*:*:*:*
opera opera_browser 7.02 cpe:2.3:a:opera:opera_browser:7.02:*:*:*:*:*:*:*
opera opera_browser 7.03 cpe:2.3:a:opera:opera_browser:7.03:*:*:*:*:*:*:*
opera opera_browser 7.10 cpe:2.3:a:opera:opera_browser:7.10:*:*:*:*:*:*:*
opera opera_browser 7.10 cpe:2.3:a:opera:opera_browser:7.10:beta1:*:*:*:*:*:*
opera opera_browser 7.11 cpe:2.3:a:opera:opera_browser:7.11:*:*:*:*:*:*:*
opera opera_browser 7.11 cpe:2.3:a:opera:opera_browser:7.11:beta2:*:*:*:*:*:*
opera opera_browser 7.20 cpe:2.3:a:opera:opera_browser:7.20:*:*:*:*:*:*:*
opera opera_browser 7.20 cpe:2.3:a:opera:opera_browser:7.20:beta7:*:*:*:*:*:*
opera opera_browser 7.21 cpe:2.3:a:opera:opera_browser:7.21:*:*:*:*:*:*:*
opera opera_browser 7.22 cpe:2.3:a:opera:opera_browser:7.22:*:*:*:*:*:*:*
opera opera_browser 7.23 cpe:2.3:a:opera:opera_browser:7.23:*:*:*:*:*:*:*
opera opera_browser 7.50 cpe:2.3:a:opera:opera_browser:7.50:*:*:*:*:*:*:*
opera opera_browser 7.50 cpe:2.3:a:opera:opera_browser:7.50:beta1:*:*:*:*:*:*
opera opera_browser 7.51 cpe:2.3:a:opera:opera_browser:7.51:*:*:*:*:*:*:*
opera opera_browser 7.52 cpe:2.3:a:opera:opera_browser:7.52:*:*:*:*:*:*:*
opera opera_browser 7.53 cpe:2.3:a:opera:opera_browser:7.53:*:*:*:*:*:*:*
opera opera_browser 7.54 cpe:2.3:a:opera:opera_browser:7.54:*:*:*:*:*:*:*
opera opera_browser 7.54 cpe:2.3:a:opera:opera_browser:7.54:update1:*:*:*:*:*:*
opera opera_browser 7.54 cpe:2.3:a:opera:opera_browser:7.54:update2:*:*:*:*:*:*
opera opera_browser 7.60 cpe:2.3:a:opera:opera_browser:7.60:*:*:*:*:*:*:*
opera opera_browser 8.0 cpe:2.3:a:opera:opera_browser:8.0:*:*:*:*:*:*:*
opera opera_browser 8.0 cpe:2.3:a:opera:opera_browser:8.0:beta1:*:*:*:*:*:*
opera opera_browser 8.0 cpe:2.3:a:opera:opera_browser:8.0:beta2:*:*:*:*:*:*
opera opera_browser 8.0 cpe:2.3:a:opera:opera_browser:8.0:beta3:*:*:*:*:*:*
opera opera_browser 8.01 cpe:2.3:a:opera:opera_browser:8.01:*:*:*:*:*:*:*
opera opera_browser 8.02 cpe:2.3:a:opera:opera_browser:8.02:*:*:*:*:*:*:*
opera opera_browser 8.50 cpe:2.3:a:opera:opera_browser:8.50:*:*:*:*:*:*:*
opera opera_browser 8.51 cpe:2.3:a:opera:opera_browser:8.51:*:*:*:*:*:*:*
opera opera_browser 8.52 cpe:2.3:a:opera:opera_browser:8.52:*:*:*:*:*:*:*
opera opera_browser 8.53 cpe:2.3:a:opera:opera_browser:8.53:*:*:*:*:*:*:*
opera opera_browser 8.54 cpe:2.3:a:opera:opera_browser:8.54:*:*:*:*:*:*:*
opera opera_browser 9.0 cpe:2.3:a:opera:opera_browser:9.0:*:*:*:*:*:*:*
opera opera_browser 9.0 cpe:2.3:a:opera:opera_browser:9.0:beta1:*:*:*:*:*:*
opera opera_browser 9.0 cpe:2.3:a:opera:opera_browser:9.0:beta2:*:*:*:*:*:*
opera opera_browser 9.01 cpe:2.3:a:opera:opera_browser:9.01:*:*:*:*:*:*:*
opera opera_browser 9.02 cpe:2.3:a:opera:opera_browser:9.02:*:*:*:*:*:*:*
opera opera_browser 9.10 cpe:2.3:a:opera:opera_browser:9.10:*:*:*:*:*:*:*
opera opera_browser 9.12 cpe:2.3:a:opera:opera_browser:9.12:*:*:*:*:*:*:*
opera opera_browser 9.20 cpe:2.3:a:opera:opera_browser:9.20:*:*:*:*:*:*:*
opera opera_browser 9.20 cpe:2.3:a:opera:opera_browser:9.20:beta1:*:*:*:*:*:*
opera opera_browser 9.21 cpe:2.3:a:opera:opera_browser:9.21:*:*:*:*:*:*:*
opera opera_browser 9.22 cpe:2.3:a:opera:opera_browser:9.22:*:*:*:*:*:*:*
opera opera_browser 9.23 cpe:2.3:a:opera:opera_browser:9.23:*:*:*:*:*:*:*
opera opera_browser 9.24 cpe:2.3:a:opera:opera_browser:9.24:*:*:*:*:*:*:*
opera opera_browser 9.25 cpe:2.3:a:opera:opera_browser:9.25:*:*:*:*:*:*:*
opera opera_browser 9.26 cpe:2.3:a:opera:opera_browser:9.26:*:*:*:*:*:*:*

References for CVE-2011-4685

cvelogic Threat Intelligence