CVE-2021-42704

Arbitrary code execution via out-of-bounds write

Published May 18, 2022 · Updated Apr 16, 2025

Out-of-bounds write in Inkscape 0.91 allows context-dependent attackers to execute arbitrary code through local user interaction. CISA and Inkscape have not published the affected parser, function, input format, or invalid bounds operation. Successful exploitation requires a local execution context and user interaction, and resulting code runs with the user's Inkscape privileges.

CVSS severity7.8
High
EPSS probability1.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Inkscape 0.91 allows context-dependent attackers to execute arbitrary code through local user interaction. CISA and Inkscape have not published the affected parser, function, input format, or invalid bounds operation. Successful exploitation requires a local execution context and user interaction, and resulting code runs with the user's Inkscape privileges.

The record

CVE
CVE-2021-42704
Published
May 18, 2022
Updated
Apr 16, 2025
Vendor
Inkscape
Product
Inkscape
Classifications
CWE-787, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.91

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Inkscape · Inkscapeversion=0.91

Published CVSS scores

7.8CISA ICS-CERTCVSS: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
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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