How severe is CVE-2015-0278?

CVE-2015-0278 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2015-0278 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0278?

CVE-2015-0278 primarily affects Libuv Project Libuv. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0278?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-0278 published?

CVE-2015-0278 was published on 2015-05-18 and last updated on 2026-06-17.

CVE-2015-0278

CVE-2015-0278 is a critical-severity vulnerability in Libuv Project Libuv with a CVSS 2.0 base score of 10.0. 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-273.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-273
Affected product: Libuv Project Libuv
Published: 2015-05-18
Last modified: 2026-06-17

Description

libuv before 0.10.34 does not properly drop group privileges, which allows context-dependent attackers to gain privileges via unspecified vectors.

Frequently asked questions

What is CVE-2015-0278?: libuv before 0.10.34 does not properly drop group privileges, which allows context-dependent attackers to gain privileges via unspecified vectors.
How severe is CVE-2015-0278?: CVE-2015-0278 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2015-0278 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0278?: CVE-2015-0278 primarily affects Libuv Project Libuv. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0278?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-0278 published?: CVE-2015-0278 was published on 2015-05-18 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
cpe:2.3:a:libuv_project:libuv:*:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*

Other CWE-273 vulnerabilities

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CVE-2011-3350 — Critical (CVSS 9.8): masqmail 0.2.21 through 0.2.30 improperly calls seteuid() in src/log.c and src/masqmail.c that results in improper…
CVE-2011-2921 — Critical (CVSS 9.8): ktsuss versions 1.4 and prior has the uid set to root and does not drop privileges prior to executing user specified…
CVE-2012-1187 — Critical (CVSS 9.8): Bitlbee does not drop extra group privileges correctly in unix.c

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