CVE-2021-21049

Code execution via crafted-file out-of-bounds read

Published Feb 11, 2021 · Updated Apr 23, 2025

Out-of-bounds read in Adobe Photoshop 21.2.4 and earlier and 22.1.1 and earlier allows attackers to execute code via a crafted file. Adobe identifies the locus only as crafted-file parsing and has not disclosed the affected parser, file format, or faulty bounds operation. Exploitation requires a victim to open the file, after which attacker-controlled code runs with the victim's current-user privileges on Windows or macOS.

CVSS severity7.8
High
EPSS probability3.48%
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 Photoshop 21.2.4 and earlier and 22.1.1 and earlier allows attackers to execute code via a crafted file. Adobe identifies the locus only as crafted-file parsing and has not disclosed the affected parser, file format, or faulty bounds operation. Exploitation requires a victim to open the file, after which attacker-controlled code runs with the victim's current-user privileges on Windows or macOS.

The record

CVE
CVE-2021-21049
Published
Feb 11, 2021
Updated
Apr 23, 2025
Vendor
Adobe
Product
Adobe Photoshop
Classifications
CWE-125, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <=21.2.4
  2. Affected versionversion=unspecified <=22.1.1
  3. Affected versionversion=unspecified <=None

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Photoshopversion=unspecified <=21.2.4; version=unspecified <=22.1.1; version=unspecified <=None

Published CVSS scores

9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C
7.8Adobe Systems IncorporatedCVSS:3.0/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1204.002Malicious 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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