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CVE-2010-4586

29
FAUCET Score

CVE-2010-4586 describes a critical vulnerability in Opera versions prior to 11.00, where the default-enabled WebSockets functionality presented unspecified remote attack vectors and impact. With a CVSS score of 10.0, this flaw is easily exploitable over the network without authentication, allowing for complete compromise of confidentiality, integrity, and availability. Despite its high severity and FAUCET Risk Score of 81/100, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 11.00CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:*:beta:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:5.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:5.0:beta2:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:5.0:beta3:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:5.0:beta4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.06%
Probability of exploitation in next 30 days
EPSS Percentile
79.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0206 is in the 64th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.opensuse.org / opensuse-security-announce/2010-12/msg00006.html
secunia.com / advisories/42653
opera.com / docs/changelogs/mac/1100
opera.com / docs/changelogs/unix/1100
opera.com / docs/changelogs/windows/1100