How severe is CVE-2015-2720?

CVE-2015-2720 has a CVSS 2.0 base score of 4.4, rated medium severity.

Is CVE-2015-2720 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2720?

CVE-2015-2720 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-2720?

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

When was CVE-2015-2720 published?

CVE-2015-2720 was published on 2015-05-14 and last updated on 2026-06-17.

CVE-2015-2720

CVE-2015-2720 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 4.4. 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-17.

Key facts

Severity: Medium (CVSS 2.0 base score 4.4)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-17
Affected product: Mozilla Firefox
Published: 2015-05-14
Last modified: 2026-06-17

Description

The update implementation in Mozilla Firefox before 38.0 on Windows does not ensure that the pathname for updater.exe corresponds to the application directory, which might allow local users to gain privileges via a Trojan horse file.

Frequently asked questions

What is CVE-2015-2720?: The update implementation in Mozilla Firefox before 38.0 on Windows does not ensure that the pathname for updater.exe corresponds to the application directory, which might allow local users to gain privileges via a Trojan horse file.
How severe is CVE-2015-2720?: CVE-2015-2720 has a CVSS 2.0 base score of 4.4, rated medium severity.
Is CVE-2015-2720 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2720?: CVE-2015-2720 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-2720?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-2720 published?: CVE-2015-2720 was published on 2015-05-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

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