CVE-2021-42525

Memory disclosure via unchecked SVG buffer read

Published Nov 18, 2021 · Updated Sep 16, 2024

Out-of-bounds read in Adobe Animate 21.0.9 and earlier allows remote attackers to disclose process memory via a crafted SVG file. The SVG image parser fails to validate user-supplied data before reading past the end of an allocated buffer. A victim must open the file or visit a malicious page; exposed memory can reveal sensitive data and weaken ASLR for a chained attack.

CVSS severity4.4
Medium
EPSS probability1.67%
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 read in Adobe Animate 21.0.9 and earlier allows remote attackers to disclose process memory via a crafted SVG file. The SVG image parser fails to validate user-supplied data before reading past the end of an allocated buffer. A victim must open the file or visit a malicious page; exposed memory can reveal sensitive data and weaken ASLR for a chained attack.

The record

CVE
CVE-2021-42525
Published
Nov 18, 2021
Updated
Sep 16, 2024
Vendor
Adobe
Product
Adobe Animate
Classifications
CWE-125, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 18, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

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

  1. Affected versionversion=unspecified <=21.0.9
  2. Affected versionversion=unspecified <=None

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Animateversion=unspecified <=21.0.9; version=unspecified <=None

Published CVSS scores

4.4AdobeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
3.3Trend Micro Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-125Out-of-bounds Read
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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