CVE-2021-28856 - Vulnerability Details - OpenCVE

Description

In Deark before v1.5.8, a specially crafted input file can cause a division by zero in (src/fmtutil.c) because of the value of pixelsize.

Published: 2021-04-14

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:entropymine:deark:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-15510	In Deark before v1.5.8, a specially crafted input file can cause a division by zero in (src/fmtutil.c) because of the value of pixelsize.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00198.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://fatihhcelik.github.io/posts/Division-By-Zero-Deark/
https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28856
https://github.com/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a65222313334

History

Mon, 26 Jan 2026 16:45:00 +0000

Type	Values Removed	Values Added
References		https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28856

Subscriptions

Entropymine Deark

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-04-14T16:11:08.000Z

Updated: 2026-01-26T16:30:41.439Z

Reserved: 2021-03-19T00:00:00.000Z

Link: CVE-2021-28856

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-04-14T17:15:14.427

Modified: 2026-01-26T17:16:08.257

Link: CVE-2021-28856

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-369

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