How severe is CVE-2015-6566?

CVE-2015-6566 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-6566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6566?

CVE-2015-6566 primarily affects Zarafa Zarafa Collaboration Platform. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-6566?

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

When was CVE-2015-6566 published?

CVE-2015-6566 was published on 2016-01-11 and last updated on 2026-06-17.

CVE-2015-6566

CVE-2015-6566 is a high-severity vulnerability in Zarafa Zarafa Collaboration Platform with a CVSS 3.x base score of 8.4. 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-59.

Key facts

Severity: High (CVSS 3.x base score 8.4)
CVSS v2: 7.2
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Zarafa Zarafa Collaboration Platform
Published: 2016-01-11
Last modified: 2026-06-17

Description

zarafa-autorespond in Zarafa Collaboration Platform (ZCP) before 7.2.1 allows local users to gain privileges via a symlink attack on /tmp/zarafa-vacation-*.

Frequently asked questions

What is CVE-2015-6566?: zarafa-autorespond in Zarafa Collaboration Platform (ZCP) before 7.2.1 allows local users to gain privileges via a symlink attack on /tmp/zarafa-vacation-*.
How severe is CVE-2015-6566?: CVE-2015-6566 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-6566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6566?: CVE-2015-6566 primarily affects Zarafa Zarafa Collaboration Platform. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-6566?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-6566 published?: CVE-2015-6566 was published on 2016-01-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:zarafa:zarafa_collaboration_platform:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*

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