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CVE-2017-7448

21
FAUCET Score

CVE-2017-7448 describes a denial-of-service vulnerability in Dropbox Lepton 1.2.1, specifically within the allocate_channel_framebuffer function. This flaw allows remote attackers to crash the application via a malformed JPEG image, leading to a divide-by-zero error. Rated as MEDIUM severity (CVSS 5.5), it requires user interaction (UI:R) and local access (AV:L) to trigger, with the primary impact being high availability loss (A:H). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

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
1.20%
Probability of exploitation in next 30 days
EPSS Percentile
65.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0120 is in the 76th percentile among its peer group of 5,758 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

github.com / dropbox/lepton/commit/7789d99ac156adfd7bbf66e7824bd3e948a74cf7
PatchThird Party Advisory
github.com / dropbox/lepton/issues/86
ExploitThird Party Advisory
securityfocus.com / bid/97490