How severe is CVE-2015-0856?

CVE-2015-0856 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-2015-0856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0856?

CVE-2015-0856 primarily affects Sddm Project Sddm. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0856?

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

When was CVE-2015-0856 published?

CVE-2015-0856 was published on 2015-11-24 and last updated on 2026-06-17.

CVE-2015-0856

CVE-2015-0856 is a medium-severity vulnerability in Sddm Project Sddm with a CVSS 2.0 base score of 4.6. 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 4.6)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Sddm Project Sddm
Published: 2015-11-24
Last modified: 2026-06-17

Description

daemon/Greeter.cpp in sddm before 0.13.0 does not properly disable the KDE crash handler, which allows local users to gain privileges by crashing a greeter when using certain themes, as demonstrated by the plasma-workspace breeze theme.

Frequently asked questions

What is CVE-2015-0856?: daemon/Greeter.cpp in sddm before 0.13.0 does not properly disable the KDE crash handler, which allows local users to gain privileges by crashing a greeter when using certain themes, as demonstrated by the plasma-workspace breeze theme.
How severe is CVE-2015-0856?: CVE-2015-0856 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2015-0856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0856?: CVE-2015-0856 primarily affects Sddm Project Sddm. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-0856 published?: CVE-2015-0856 was published on 2015-11-24 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
cpe:2.3:a:sddm_project:sddm:*:*:*:*:*:*:*:*

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