CVE-2018-20820

mediumpriority · track · 22EPSS 0.010 · 61 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.96% (61st) EPSS

CVSS 4.3 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

read_ujpg in jpgcoder.cc in Dropbox Lepton 1.2.1 allows attackers to cause a denial-of-service (application runtime crash because of an integer overflow) via a crafted file.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.05.5mediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.05.1mediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-190USprimary

affected products (2)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
dropbox lepton= 1.2.1nvdUScpe:2.3:a:dropbox:lepton:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2019-04-23modified 2026-06-17

related (4,660)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2025-48595US	—OT critical	1.95% (80th)	KEV	2026-06-01
In multiple locations, there is a possible way to achieve code execution due to an integer overflow. This could lead to local escalation of privilege with no additional execution p…
CVE-2026-21385US	—OT critical	1.32% (71st)	KEV	2026-03-02
Memory corruption while using alignments for memory allocation.
CVE-2025-24985US	—OT critical	3.89% (90th)	KEV	2025-03-11
Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.
CVE-2024-38080US	—OT critical	7.12% (94th)	KEV	2024-07-09
Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2023-33107US	high7.8OT critical	0.74% (54th)	KEV	2023-12-05
Memory corruption in Graphics Linux while assigning shared virtual memory region during IOCTL call.

+4655 more

references (6)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan