7.8

CVE-2021-20310: imagemagick Divide By Zero

CVSS: 7.8v2.0HighModified
AliasesCGA-6rw9-2mfm-q6f2CGA-9q6v-g637-x2vj
Published 11-05-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-20310 is a high (CVSS 7.8) Divide By Zero vulnerability in imagemagick. EPSS estimates a 1.29% chance of exploitation in the next 30 days, higher than 69.9% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
1.29%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-4G8Q-RH2H-FWPJ

Timeline

  1. 11-05-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in ImageMagick in versions before 7.0.11, where a division by zero ConvertXYZToJzazbz() of MagickCore/colorspace.c may trigger undefined behavior via a crafted image file that is submitted by an attacker and processed by an application using ImageMagick. The highest threat from this vulnerability is to system availability.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.29%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

0.00 pp

From 1.29% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.29%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard1 product
  • imagemagick-6All versions (No fix recorded)
Imagemagick1 product

2 vendors · 2 products

References

1 links