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NVD / CVE Program· CNA redhat

CVE-2021-20313: A flaw was found in ImageMagick in versions before 7.0.11.

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.7% (FIRST EPSS); higher than 78.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: imagemagick (Alpine:v3.13) 7.0.11.13-r0; imagemagick (Alpine:v3.14) 7.0.11.1-r0; imagemagick (Debian:10) 8:6.9.10.23+dfsg-2.1+deb10u5.

Low priority for now. Upgrade to imagemagick (Alpine:v3.13) 7.0.11.13-r0; imagemagick (Alpine:v3.14) 7.0.11.1-r0; imagemagick (Debian:10) 8:6.9.10.23+dfsg-2.1+deb10u5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in ImageMagick in versions before 7.0.11. A potential cipher leak when the calculate signatures in TransformSignature is possible. The highest threat from this vulnerability is to data confidentiality.

Published
May 11, 2021
Updated
Jun 16, 2026
EPSS
1.7% · 78th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.7%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
imagemagickimagemagick
debiandebian linux

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a ImageMagick

    • ImageMagick 7.0.11affected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux9.0
  • imagemagick imagemagickbefore 7.0.11-0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.13imagemagickbefore 7.0.11.13-r07.0.11.13-r0
Alpine:v3.14imagemagickbefore 7.0.11.1-r07.0.11.1-r0
Debian:10imagemagickbefore 8:6.9.10.23+dfsg-2.1+deb10u58:6.9.10.23+dfsg-2.1+deb10u5
Debian:12imagemagickbefore 8:6.9.11.60+dfsg-1.58:6.9.11.60+dfsg-1.5
Debian:9imagemagickbefore 8:6.9.7.4+dfsg-11+deb9u138:6.9.7.4+dfsg-11+deb9u13
openSUSE:Leap 15.2ImageMagickbefore 7.0.7.34-lp152.12.15.17.0.7.34-lp152.12.15.1
SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSSImageMagickbefore 7.0.7.34-150000.3.123.17.0.7.34-150000.3.123.1
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2ImageMagickbefore 7.0.7.34-10.15.17.0.7.34-10.15.1
SUSE:Linux Enterprise Software Development Kit 12 SP5ImageMagickbefore 6.8.8.1-71.165.16.8.8.1-71.165.1

Same product

imagemagick: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-3714The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT coders in ImageMagick before 6.9.3-10 and 7.x…KEV
    92Now
  • CVE-2016-3718The (1) HTTP and (2) FTP coders in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allow remote attackers to conduct server-side request…KEV
    75This week
  • CVE-2016-3715The EPHEMERAL coder in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allows remote attackers to delete arbitrary files via a crafted…KEV
    75This week

Published before and after this one in the same product

  • ← EarlierCVE-2021-20311May 11, 2021 · A flaw was found in ImageMagick in versions before 7.0.11, where a division by zero in sRGBTransformImage() in the MagickCore/colorspace.c…
    30Monitor
  • ← EarlierCVE-2021-20312May 11, 2021 · A flaw was found in ImageMagick in versions 7.0.11, where an integer overflow in WriteTHUMBNAILImage of coders/thumbnail.c may trigger…
    31Monitor
  • Later →CVE-2020-27769May 14, 2021 · In ImageMagick versions before 7.0.9-0, there are outside the range of representable values of type 'float' at MagickCore/quantize.c.
    13Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:imagemagick7.0.11.13-r0 · Alpine:v3.13Package registry (OSV)
debian:imagemagick8:6.9.11.60+dfsg-1.5 · Debian:12Package registry (OSV)
opensuse:ImageMagick7.0.7.34-lp152.12.15.1 · openSUSE:Leap 15.2Package registry (OSV)
suse:ImageMagick7.0.7.34-10.15.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

The bug in code

The whole CWE-200 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json
{  "permissions": ["tabs", "<all_urls>"],  "background": { "service_worker": "analytics.js" }}

Fixed

json
{  "permissions": ["activeTab"],  "host_permissions": ["https://yildiz.example/*"]}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records