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01 Record

CVE-2021-20745

Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.

UnratedPUBLISHEDCNA: jpcert
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.96% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 61.3% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-06-28 00:50Z5 YR AGO
Last updated
2024-08-03 17:53Z2 YR AGO
Reserved
2020-12-17
Assigning CNA
jpcert
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base
Data version
5.1
Document digest
b50989faa1cd6440acc156e72aaa4798048e8ecf9165611c88cbf04ba0066f1b

05 Affected products

VendorProductVersionsPlatforms
Takuya MatsuyamaInkdropversions prior to v5.3.1—

06 References