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CVE-2017-8891

20
FAUCET Score

CVE-2017-8891 describes a Denial of Service (DoS) vulnerability in Dropbox Lepton version 1.2.1, where a malformed lepton file can cause a segmentation fault and application crash due to improper thread setup. This medium-severity vulnerability (CVSS 5.5) requires user interaction (UI:R) and local access (AV:L) to trigger a high impact on availability (A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.1CPE matchmatch criteria
cpe:2.3:a:dropbox:lepton:1.2.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0092 is in the 67th percentile among its peer group of 5,757 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

openwall.com / lists/oss-security/2017/05/10/1
Mailing ListPatchThird Party Advisory
github.com / dropbox/lepton/commit/82167c144a322cc956da45407f6dce8d4303d346
Issue TrackingPatchThird Party Advisory
github.com / dropbox/lepton/issues/87
Issue TrackingPatchThird Party Advisory