CVE-2020-19492Public exploit

Image-converter crash via zero-width TGA input

Published Jul 21, 2021 · Updated Aug 4, 2024

A divide-by-zero flaw in sam2p 0.49.4 allows attackers to crash the image converter by supplying a crafted zero-width TGA image. ReadImage multiplies the decoded width and height, then divides the result by the unchecked width while validating image dimensions. The file must be processed locally; the demonstrated consequence is a floating-point exception that terminates the conversion process.

CVSS severity7.8
High
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A divide-by-zero flaw in sam2p 0.49.4 allows attackers to crash the image converter by supplying a crafted zero-width TGA image. ReadImage multiplies the decoded width and height, then divides the result by the unchecked width while validating image dimensions. The file must be processed locally; the demonstrated consequence is a floating-point exception that terminates the conversion process.

The record

CVE
CVE-2020-19492
Published
Jul 21, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 21, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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