CVE-2021-40716

Sensitive-memory disclosure via out-of-bounds read

Published Sep 29, 2021 · Updated Nov 3, 2025

Out-of-bounds read in Adobe XMP Toolkit SDK 2021.07 and earlier allows attackers to disclose sensitive memory via a malicious file. Adobe has not disclosed the exact faulty routine or missing bounds check beyond identifying the flaw as an out-of-bounds read during file processing. A victim must open the crafted file; the resulting disclosure can reveal ASLR information, and Adobe reports arbitrary file-system read in the current user's context.

CVSS severity5.5
Medium
EPSS probability2.33%
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 XMP Toolkit SDK 2021.07 and earlier allows attackers to disclose sensitive memory via a malicious file. Adobe has not disclosed the exact faulty routine or missing bounds check beyond identifying the flaw as an out-of-bounds read during file processing. A victim must open the crafted file; the resulting disclosure can reveal ASLR information, and Adobe reports arbitrary file-system read in the current user's context.

The record

CVE
CVE-2021-40716
Published
Sep 29, 2021
Updated
Nov 3, 2025
Vendor
Adobe
Product
XMP Toolkit SDK
Classifications
CWE-125, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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=unspecified <=2021.07
  2. Affected versionversion=unspecified <=None

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Adobe · XMP Toolkit SDKversion=unspecified <=2021.07; version=unspecified <=None

Published CVSS scores

5.5AdobeCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/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
T1204.002User Execution: Malicious File

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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