How severe is CVE-2015-2718?

CVE-2015-2718 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-2718 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2718?

CVE-2015-2718 primarily affects Mozilla Firefox. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-2718?

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

When was CVE-2015-2718 published?

CVE-2015-2718 was published on 2015-05-14 and last updated on 2026-06-17.

CVE-2015-2718

CVE-2015-2718 is a medium-severity vulnerability in Mozilla Firefox 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Mozilla Firefox
Published: 2015-05-14
Last modified: 2026-06-17

Description

The WebChannel.jsm module in Mozilla Firefox before 38.0 allows remote attackers to bypass the Same Origin Policy and obtain sensitive webchannel-response data via a crafted web site containing an IFRAME element referencing a different web site that is intended to read this data.

Frequently asked questions

What is CVE-2015-2718?: The WebChannel.jsm module in Mozilla Firefox before 38.0 allows remote attackers to bypass the Same Origin Policy and obtain sensitive webchannel-response data via a crafted web site containing an IFRAME element referencing a different web site that is intended to read this data.
How severe is CVE-2015-2718?: CVE-2015-2718 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-2718 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2718?: CVE-2015-2718 primarily affects Mozilla Firefox. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-2718?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-2718 published?: CVE-2015-2718 was published on 2015-05-14 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

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