How severe is CVE-2017-8891?

CVE-2017-8891 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-8891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8891?

CVE-2017-8891 affects Dropbox Lepton. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8891?

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

When was CVE-2017-8891 published?

CVE-2017-8891 was published on 2017-05-10 and last updated on 2026-06-17.

CVE-2017-8891

CVE-2017-8891 is a medium-severity vulnerability in Dropbox Lepton with a CVSS 3.x base score of 5.5. 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-1187.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1187
Affected product: Dropbox Lepton
Published: 2017-05-10
Last modified: 2026-06-17

Description

Dropbox Lepton 1.2.1 allows DoS (SEGV and application crash) via a malformed lepton file because the code does not ensure setup of a correct number of threads.

Frequently asked questions

What is CVE-2017-8891?: Dropbox Lepton 1.2.1 allows DoS (SEGV and application crash) via a malformed lepton file because the code does not ensure setup of a correct number of threads.
How severe is CVE-2017-8891?: CVE-2017-8891 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-8891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8891?: CVE-2017-8891 affects Dropbox Lepton. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8891?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8891 published?: CVE-2017-8891 was published on 2017-05-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dropbox:lepton:1.2.1:*:*:*:*:*:*:*

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