How severe is CVE-2011-3377?

CVE-2011-3377 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-3377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3377?

CVE-2011-3377 primarily affects Redhat Icedtea-web. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3377?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-3377 published?

CVE-2011-3377 was published on 2014-02-05 and last updated on 2026-06-16.

CVE-2011-3377

CVE-2011-3377 is a medium-severity vulnerability in Redhat Icedtea-web with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Redhat Icedtea-web
Published: 2014-02-05
Last modified: 2026-06-16

Description

The web browser plug-in in IcedTea-Web 1.0.x before 1.0.6 and 1.1.x before 1.1.4 allows remote attackers to bypass the Same Origin Policy (SOP) and execute arbitrary script or establish network connections to unintended hosts via an applet whose origin has the same second-level domain, but a different sub-domain than the targeted domain.

Frequently asked questions

What is CVE-2011-3377?: The web browser plug-in in IcedTea-Web 1.0.x before 1.0.6 and 1.1.x before 1.1.4 allows remote attackers to bypass the Same Origin Policy (SOP) and execute arbitrary script or establish network connections to unintended hosts via an applet whose origin has the same second-level domain, but a different sub-domain than the targeted domain.
How severe is CVE-2011-3377?: CVE-2011-3377 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-3377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3377?: CVE-2011-3377 primarily affects Redhat Icedtea-web. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3377 published?: CVE-2011-3377 was published on 2014-02-05 and last updated on 2026-06-16.

References

Affected products (15)

cpe:2.3:a:redhat:icedtea-web:1.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.1:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:redhat:icedtea-web:1.1.3:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:12.1:*:*:*:*:*:*:*

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